diff --git a/CHANGES b/CHANGES
index 4122c3d..d0d974d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -28,8 +28,11 @@ Corrections:
 	Now catching the case of empty SNI host to prevent OpenSSL error.
 	This is related to Red Hat issue 2081414.
 
+	Better formatted help output; address keywords in help output are now
+	printed in uppercase.
+
 Coding:
-	Introduced groups_t instead of uint32_t, for more flexibility
+	Introduced groups_t instead of uint32_t, for more flexibility.
 
 	Rearranged option group bits to only require 32 bits on older systems.
 
diff --git a/socat.c b/socat.c
index 1dcd461..9f09305 100644
--- a/socat.c
+++ b/socat.c
@@ -424,7 +424,7 @@ void socat_usage(FILE *fd) {
    fputs(copyright_socat, fd); fputc('\n', fd);
    fputs("Usage:\n", fd);
    fputs("socat [options] <bi-address> <bi-address>\n", fd);
-   fputs("   options:\n", fd);
+   fputs("   options (general command line options):\n", fd);
    fputs("      -V     print version and feature information to stdout, and exit\n", fd);
 #if WITH_HELP
    fputs("      -h|-?  print a help text describing command line options and addresses\n", fd);
diff --git a/test.sh b/test.sh
index fec51b1..24dde14 100755
--- a/test.sh
+++ b/test.sh
@@ -622,7 +622,7 @@ case "$TESTS" in
 # test if address options array ("optionnames") is sorted alphabetically:
 $ECHO "testing if address options are sorted...\c"
 TF="$TD/socat-qq"
-$SOCAT -??? |sed '1,/opt:/ d' |awk '{print($1);}' >"$TF"
+$SOCAT -hhh |sed '1,/opt:/ d' |awk '{print($1);}' >"$TF"
 LC_ALL=C sort "$TF" |diff "$TF" - >"$TF-diff"
 if [ -s "$TF-diff" ]; then
     $ECHO "\n*** option array is not sorted. Wrong entries:" >&2
@@ -776,7 +776,7 @@ testoptions () {
     local a A;
     for a in $@; do
 	A=$(echo "$a" |tr 'a-z' 'A-Z')
-	if $SOCAT -??? |grep "[^a-z0-9-]$a[^a-z0-9-]" >/dev/null; then
+	if $SOCAT -hhh |grep "[^a-z0-9-]$a[^a-z0-9-]" >/dev/null; then
 	    shift
 	    continue
 	fi
@@ -933,35 +933,35 @@ runsip6 () {
 # check if TCP on IPv4 is available on host
 runstcp4 () {
     runsip4 >/dev/null || { echo TCP4; return 1; }
-    $SOCAT -h |grep ' tcp4-' >/dev/null || return 1
+    $SOCAT -h |grep -i ' TCP4-' >/dev/null || return 1
     return 0;
 }
 
 # check if TCP on IPv6 is available on host
 runstcp6 () {
     runsip6 >/dev/null || { echo TCP6; return 1; }
-    $SOCAT -h |grep ' tcp6-' >/dev/null || return 1
+    $SOCAT -h |grep -i ' TCP6-' >/dev/null || return 1
     return 0;
 }
 
 # check if UDP on IPv4 is available on host
 runsudp4 () {
     runsip4 >/dev/null || { echo UDP4; return 1; }
-    $SOCAT -h |grep ' udp4-' >/dev/null || return 1
+    $SOCAT -h |grep -i ' UDP4-' >/dev/null || return 1
     return 0;
 }
 
 # check if UDP on IPv6 is available on host
 runsudp6 () {
     runsip6 >/dev/null || { echo UDP6; return 1; }
-    $SOCAT -h |grep ' udp6-' >/dev/null || return 1
+    $SOCAT -h |grep -i ' UDP6-' >/dev/null || return 1
     return 0;
 }
 
 # check if SCTP on IPv4 is available on host
 runssctp4 () {
     runsip4 >/dev/null || { echo SCTP4; return 1; }
-    $SOCAT -h |grep ' sctp4-' >/dev/null || return 1
+    $SOCAT -h |grep -i ' SCTP4-' >/dev/null || return 1
     $SOCAT /dev/null SCTP4-L:0,accept-timeout=0.001 2>/dev/null || return 1;
     return 0;
 }
@@ -969,7 +969,7 @@ runssctp4 () {
 # check if SCTP on IPv6 is available on host
 runssctp6 () {
     runsip6 >/dev/null || { echo SCTP6; return 1; }
-    $SOCAT -h |grep ' sctp6-' >/dev/null || return 1
+    $SOCAT -h |grep ' SCTP6-' >/dev/null || return 1
     $SOCAT /dev/null SCTP6-L:0,accept-timeout=0.001 2>/dev/null || return 1;
     return 0;
 }
diff --git a/xio-creat.c b/xio-creat.c
index c3c2af8..de5faac 100644
--- a/xio-creat.c
+++ b/xio-creat.c
@@ -17,7 +17,7 @@ static int xioopen_creat(int arg, const char *argv[], struct opt *opts, int rw,
 
 
 /*! within stream model, this is a write-only address - use 2 instead of 3 */
-const struct addrdesc addr_creat  = { "create", 3, xioopen_creat, GROUP_FD|GROUP_NAMED|GROUP_FILE, 0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_creat  = { "CREATE", 3, xioopen_creat, GROUP_FD|GROUP_NAMED|GROUP_FILE, 0, 0, 0 HELP(":<filename>") };
 
 
 /* retrieve the mode option and perform the creat() call.
diff --git a/xio-creat.h b/xio-creat.h
index 2718262..a62cd3b 100644
--- a/xio-creat.h
+++ b/xio-creat.h
@@ -5,6 +5,6 @@
 #ifndef __xio_creat_h_included
 #define __xio_creat_h_included 1
 
-extern const struct addrdesc addr_creat;
+extern const struct addrdesc xioaddr_creat;
 
 #endif /* !defined(__xio_creat_h_included) */
diff --git a/xio-exec.c b/xio-exec.c
index dd1acab..56c2929 100644
--- a/xio-exec.c
+++ b/xio-exec.c
@@ -20,7 +20,7 @@ static int xioopen_exec(int argc, const char *argv[], struct opt *opts,
 		int dummy1, int dummy2, int dummy3
 		);
 
-const struct addrdesc addr_exec = { "exec",   3, xioopen_exec, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, 0, 0, 0 HELP(":<command-line>") };
+const struct addrdesc xioaddr_exec = { "EXEC",   3, xioopen_exec, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, 0, 0, 0 HELP(":<command-line>") };
 
 const struct optdesc opt_dash = { "dash", "login", OPT_DASH, GROUP_EXEC, PH_PREEXEC, TYPE_BOOL, OFUNC_SPEC };
 
diff --git a/xio-exec.h b/xio-exec.h
index 221eeb2..15e2331 100644
--- a/xio-exec.h
+++ b/xio-exec.h
@@ -5,7 +5,7 @@
 #ifndef __xio_exec_h_included
 #define __xio_exec_h_included 1
 
-extern const struct addrdesc addr_exec;
+extern const struct addrdesc xioaddr_exec;
 
 extern const struct optdesc opt_dash;
 
diff --git a/xio-fdnum.c b/xio-fdnum.c
index 70015d0..1299b43 100644
--- a/xio-fdnum.c
+++ b/xio-fdnum.c
@@ -15,7 +15,7 @@
 static int xioopen_fdnum(int argc, const char *argv[], struct opt *opts, int rw, xiofile_t *xfd, groups_t groups, int dummy1, int dummy2, int dummy3);
 
 
-const struct addrdesc addr_fd     = { "fd",     3, xioopen_fdnum, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(":<num>") };
+const struct addrdesc xioaddr_fd     = { "FD",     3, xioopen_fdnum, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(":<num>") };
 
 
 /* use some file descriptor and apply the options. Set the FD_CLOEXEC flag. */
diff --git a/xio-fdnum.h b/xio-fdnum.h
index baf89aa..06f1766 100644
--- a/xio-fdnum.h
+++ b/xio-fdnum.h
@@ -5,7 +5,7 @@
 #ifndef __xio_fdnum_h_included
 #define __xio_fdnum_h_included 1
 
-extern const struct addrdesc addr_fd;
+extern const struct addrdesc xioaddr_fd;
 
 extern int xioopen_fd(struct opt *opts, int rw, xiosingle_t *xfd, int numfd, int dummy2, int dummy3);
 
diff --git a/xio-file.c b/xio-file.c
index 27b3fab..9227fb4 100644
--- a/xio-file.c
+++ b/xio-file.c
@@ -66,7 +66,7 @@ const struct optdesc opt_o_trunc     = { "o-trunc",     "trunc",  OPT_O_TRUNC,
 
 #if _WITH_FILE	/*! inconsistent name FILE vs. OPEN */
 
-const struct addrdesc addr_open   = { "open",   3, xioopen_open, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_REG|GROUP_NAMED|GROUP_OPEN|GROUP_FILE|GROUP_TERMIOS, 0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_open   = { "OPEN",   3, xioopen_open, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_REG|GROUP_NAMED|GROUP_OPEN|GROUP_FILE|GROUP_TERMIOS, 0, 0, 0 HELP(":<filename>") };
 
 /* open for writing:
    if the filesystem entry already exists, the data is appended
diff --git a/xio-file.h b/xio-file.h
index c52b668..f592d68 100644
--- a/xio-file.h
+++ b/xio-file.h
@@ -26,6 +26,6 @@ extern const struct optdesc opt_o_priv;
 extern const struct optdesc opt_o_trunc;
 extern const struct optdesc opt_o_noatime;
 
-extern const struct addrdesc addr_open;
+extern const struct addrdesc xioaddr_open;
 
 #endif /* !defined(__xio_file_h_included) */
diff --git a/xio-gopen.c b/xio-gopen.c
index 6321330..0bd62fd 100644
--- a/xio-gopen.c
+++ b/xio-gopen.c
@@ -17,7 +17,7 @@
 static int xioopen_gopen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, groups_t groups, int dummy1, int dummy2, int dummy3);
 
 
-const struct addrdesc addr_gopen  = { "gopen",  3, xioopen_gopen, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_REG|GROUP_NAMED|GROUP_OPEN|GROUP_FILE|GROUP_TERMIOS|GROUP_SOCKET|GROUP_SOCK_UNIX, 0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_gopen  = { "GOPEN",  3, xioopen_gopen, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_REG|GROUP_NAMED|GROUP_OPEN|GROUP_FILE|GROUP_TERMIOS|GROUP_SOCKET|GROUP_SOCK_UNIX, 0, 0, 0 HELP(":<filename>") };
 
 static int xioopen_gopen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, groups_t groups, int dummy1, int dummy2, int dummy3) {
    const char *filename = argv[1];
diff --git a/xio-gopen.h b/xio-gopen.h
index 6c5e8e7..301be95 100644
--- a/xio-gopen.h
+++ b/xio-gopen.h
@@ -5,6 +5,6 @@
 #ifndef __xio_gopen_h_included
 #define __xio_gopen_h_included 1
 
-extern const struct addrdesc addr_gopen;
+extern const struct addrdesc xioaddr_gopen;
 
 #endif /* !defined(__xio_gopen_h_included) */
diff --git a/xio-interface.c b/xio-interface.c
index cae24b3..1c9106f 100644
--- a/xio-interface.c
+++ b/xio-interface.c
@@ -19,7 +19,7 @@ int xioopen_interface(int argc, const char *argv[], struct opt *opts,
 		      int xioflags, xiofile_t *xfd, groups_t groups, int pf,
 		      int dummy2, int dummy3);
 
-const struct addrdesc xioaddr_interface= { "interface",    3, xioopen_interface, GROUP_FD|GROUP_SOCKET, PF_PACKET, 0, 0 HELP(":<interface>") };
+const struct addrdesc xioaddr_interface= { "INTERFACE",    3, xioopen_interface, GROUP_FD|GROUP_SOCKET, PF_PACKET, 0, 0 HELP(":<interface>") };
 
 
 static
diff --git a/xio-openssl.c b/xio-openssl.c
index 026489f..29413ad 100644
--- a/xio-openssl.c
+++ b/xio-openssl.c
@@ -62,7 +62,7 @@ static int openssl_delete_cert_info(void);
 
 /* description record for ssl connect */
 const struct addrdesc xioaddr_openssl = {
-   "openssl",	/* keyword for selecting this address type in xioopen calls
+   "OPENSSL",	/* keyword for selecting this address type in xioopen calls
 		   (canonical or main name) */
    3,		/* data flow directions this address supports on API layer:
 		   1..read, 2..write, 3..both */
@@ -83,7 +83,7 @@ const struct addrdesc xioaddr_openssl = {
 #if WITH_LISTEN
 /* description record for ssl listen */
 const struct addrdesc xioaddr_openssl_listen = {
-   "openssl-listen",	/* keyword for selecting this address type in xioopen calls
+   "OPENSSL-LISTEN",	/* keyword for selecting this address type in xioopen calls
 		   (canonical or main name) */
    3,		/* data flow directions this address supports on API layer:
 		   1..read, 2..write, 3..both */
@@ -102,9 +102,9 @@ const struct addrdesc xioaddr_openssl_listen = {
 } ;
 #endif /* WITH_LISTEN */
 
-const struct addrdesc xioaddr_openssl_dtls_client = { "openssl-dtls-client", 3, xioopen_openssl_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_CHILD|GROUP_OPENSSL|GROUP_RETRY, 1, 0, 0  HELP(":<host>:<port>") } ;
+const struct addrdesc xioaddr_openssl_dtls_client = { "OPENSSL-DTLS-CLIENT", 3, xioopen_openssl_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_CHILD|GROUP_OPENSSL|GROUP_RETRY, 1, 0, 0  HELP(":<host>:<port>") } ;
 #if WITH_LISTEN
-const struct addrdesc xioaddr_openssl_dtls_server = { "openssl-dtls-server", 3, xioopen_openssl_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_OPENSSL|GROUP_RETRY, 1, 0, 0  HELP(":<port>") } ;
+const struct addrdesc xioaddr_openssl_dtls_server = { "OPENSSL-DTLS-SERVER", 3, xioopen_openssl_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_OPENSSL|GROUP_RETRY, 1, 0, 0  HELP(":<port>") } ;
 #endif
 
 /* both client and server */
diff --git a/xio-pipe.c b/xio-pipe.c
index b5b9719..4a18f32 100644
--- a/xio-pipe.c
+++ b/xio-pipe.c
@@ -16,7 +16,7 @@ static int xioopen_fifo(int argc, const char *argv[], struct opt *opts, int xiof
 static int xioopen_fifo_unnamed(xiofile_t *sock, struct opt *opts);
 
 
-const struct addrdesc addr_pipe   = { "pipe",   3, xioopen_fifo,  GROUP_FD|GROUP_NAMED|GROUP_OPEN|GROUP_FIFO, 0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_pipe   = { "PIPE",   3, xioopen_fifo,  GROUP_FD|GROUP_NAMED|GROUP_OPEN|GROUP_FIFO, 0, 0, 0 HELP("[:<filename>]") };
 
 
 /* process an unnamed bidirectional "pipe" or "fifo" or "echo" argument with
diff --git a/xio-pipe.h b/xio-pipe.h
index 7e8fe5e..34d95fa 100644
--- a/xio-pipe.h
+++ b/xio-pipe.h
@@ -5,7 +5,7 @@
 #ifndef __xio_pipe_h_included
 #define __xio_pipe_h_included 1
 
-const extern struct addrdesc addr_pipe;
+extern const struct addrdesc xioaddr_pipe;
 
 extern int xioopen_fifo_unnamed(char *arg, xiofile_t *sock);
 
diff --git a/xio-proxy.c b/xio-proxy.c
index d4d664d..47d133f 100644
--- a/xio-proxy.c
+++ b/xio-proxy.c
@@ -31,7 +31,7 @@ const struct optdesc opt_proxy_resolve   = { "proxy-resolve",   "resolve", OPT_P
 const struct optdesc opt_proxy_authorization  = { "proxy-authorization",  "proxyauth", OPT_PROXY_AUTHORIZATION,  GROUP_HTTP, PH_LATE, TYPE_STRING,  OFUNC_SPEC };
 const struct optdesc opt_proxy_authorization_file  = { "proxy-authorization-file",  "proxyauthfile", OPT_PROXY_AUTHORIZATION_FILE,  GROUP_HTTP, PH_LATE, TYPE_STRING,  OFUNC_SPEC };
 
-const struct addrdesc addr_proxy_connect = { "proxy", 3, xioopen_proxy_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_HTTP|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<proxy-server>:<host>:<port>") };
+const struct addrdesc xioaddr_proxy_connect = { "PROXY", 3, xioopen_proxy_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_HTTP|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<proxy-server>:<host>:<port>") };
 
 
 /*0#define CONNLEN 40*/	/* "CONNECT 123.156.189.123:65432 HTTP/1.0\r\n\0" */
diff --git a/xio-proxy.h b/xio-proxy.h
index be68ccb..f74a9bc 100644
--- a/xio-proxy.h
+++ b/xio-proxy.h
@@ -21,7 +21,7 @@ extern const struct optdesc opt_proxy_resolve;
 extern const struct optdesc opt_proxy_authorization;
 extern const struct optdesc opt_proxy_authorization_file;
 
-extern const struct addrdesc addr_proxy_connect;
+extern const struct addrdesc xioaddr_proxy_connect;
 
 int _xioopen_proxy_prepare(struct proxyvars *proxyvars, struct opt *opts,
 			   const char *targetname, const char *targetport);
diff --git a/xio-pty.c b/xio-pty.c
index cf508aa..8e35e91 100644
--- a/xio-pty.c
+++ b/xio-pty.c
@@ -20,7 +20,7 @@
 
 static int xioopen_pty(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, groups_t groups, int dummy1, int dummy2, int dummy3);
 
-const struct addrdesc addr_pty = { "pty",   3, xioopen_pty, GROUP_NAMED|GROUP_FD|GROUP_TERMIOS|GROUP_PTY, 0, 0, 0 HELP("") };
+const struct addrdesc xioaddr_pty = { "PTY",   3, xioopen_pty, GROUP_NAMED|GROUP_FD|GROUP_TERMIOS|GROUP_PTY, 0, 0, 0 HELP("") };
 
 const struct optdesc opt_symbolic_link = { "symbolic-link", "link", OPT_SYMBOLIC_LINK, GROUP_PTY, PH_LATE, TYPE_FILENAME, OFUNC_SPEC, 0, 0 };
 #if HAVE_POLL
diff --git a/xio-pty.h b/xio-pty.h
index bdc91e3..ef141a0 100644
--- a/xio-pty.h
+++ b/xio-pty.h
@@ -5,7 +5,7 @@
 #ifndef __xio_pty_h_included
 #define __xio_pty_h_included 1
 
-extern const struct addrdesc addr_pty;
+extern const struct addrdesc xioaddr_pty;
 
 extern const struct optdesc opt_symbolic_link;
 #if HAVE_POLL
diff --git a/xio-rawip.c b/xio-rawip.c
index d3340ea..e355476 100644
--- a/xio-rawip.c
+++ b/xio-rawip.c
@@ -39,23 +39,23 @@ int _xioopen_rawip_sendto(const char *hostname, const char *protname,
 			  struct opt *opts, int xioflags,
 			  xiofile_t *xxfd, groups_t groups, int *pf);
 
-const struct addrdesc addr_rawip_sendto  = { "ip-sendto",      3, xioopen_rawip_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6, PF_UNSPEC, 0, 0 HELP(":<host>:<protocol>") };
-const struct addrdesc addr_rawip_datagram= { "ip-datagram",    3, xioopen_rawip_datagram, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_RANGE, PF_UNSPEC, 0, 0 HELP(":<host>:<protocol>") };
-const struct addrdesc addr_rawip_recvfrom= { "ip-recvfrom",    3, xioopen_rawip_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_CHILD|GROUP_RANGE, PF_UNSPEC, SOCK_RAW, 0 HELP(":<protocol>") };
-const struct addrdesc addr_rawip_recv    = { "ip-recv",        1, xioopen_rawip_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_RANGE,             PF_UNSPEC, SOCK_RAW, 0 HELP(":<protocol>") };
+const struct addrdesc xioaddr_rawip_sendto  = { "IP-SENDTO",      3, xioopen_rawip_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6, PF_UNSPEC, 0, 0 HELP(":<host>:<protocol>") };
+const struct addrdesc xioaddr_rawip_datagram= { "IP-DATAGRAM",    3, xioopen_rawip_datagram, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_RANGE, PF_UNSPEC, 0, 0 HELP(":<host>:<protocol>") };
+const struct addrdesc xioaddr_rawip_recvfrom= { "IP-RECVFROM",    3, xioopen_rawip_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_CHILD|GROUP_RANGE, PF_UNSPEC, SOCK_RAW, 0 HELP(":<protocol>") };
+const struct addrdesc xioaddr_rawip_recv    = { "IP-RECV",        1, xioopen_rawip_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_RANGE,             PF_UNSPEC, SOCK_RAW, 0 HELP(":<protocol>") };
 
 #if WITH_IP4
-const struct addrdesc addr_rawip4_sendto  = { "ip4-sendto",     3, xioopen_rawip_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4, PF_INET, 0, 0 HELP(":<host>:<protocol>") };
-const struct addrdesc addr_rawip4_datagram= { "ip4-datagram",   3, xioopen_rawip_datagram, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_RANGE, PF_INET, 0, 0 HELP(":<host>:<protocol>") };
-const struct addrdesc addr_rawip4_recvfrom= { "ip4-recvfrom",   3, xioopen_rawip_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_CHILD|GROUP_RANGE, PF_INET,  SOCK_RAW, 0 HELP(":<protocol>") };
-const struct addrdesc addr_rawip4_recv    = { "ip4-recv",       1, xioopen_rawip_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_RANGE,             PF_INET,  SOCK_RAW, 0 HELP(":<protocol>") };
+const struct addrdesc xioaddr_rawip4_sendto  = { "IP4-SENDTO",     3, xioopen_rawip_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4, PF_INET, 0, 0 HELP(":<host>:<protocol>") };
+const struct addrdesc xioaddr_rawip4_datagram= { "IP4-DATAGRAM",   3, xioopen_rawip_datagram, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_RANGE, PF_INET, 0, 0 HELP(":<host>:<protocol>") };
+const struct addrdesc xioaddr_rawip4_recvfrom= { "IP4-RECVFROM",   3, xioopen_rawip_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_CHILD|GROUP_RANGE, PF_INET,  SOCK_RAW, 0 HELP(":<protocol>") };
+const struct addrdesc xioaddr_rawip4_recv    = { "IP4-RECV",       1, xioopen_rawip_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_RANGE,             PF_INET,  SOCK_RAW, 0 HELP(":<protocol>") };
 #endif
 
 #if WITH_IP6
-const struct addrdesc addr_rawip6_sendto  = { "ip6-sendto",     3, xioopen_rawip_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6, PF_INET6, 0, 0 HELP(":<host>:<protocol>") };
-const struct addrdesc addr_rawip6_datagram= { "ip6-datagram",   3, xioopen_rawip_datagram, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_RANGE, PF_INET6, 0, 0 HELP(":<host>:<protocol>") };
-const struct addrdesc addr_rawip6_recvfrom= { "ip6-recvfrom",   3, xioopen_rawip_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_CHILD|GROUP_RANGE, PF_INET6, SOCK_RAW, 0 HELP(":<protocol>") };
-const struct addrdesc addr_rawip6_recv    = { "ip6-recv",       1, xioopen_rawip_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_RANGE,             PF_INET6, SOCK_RAW, 0 HELP(":<protocol>") };
+const struct addrdesc xioaddr_rawip6_sendto  = { "IP6-SENDTO",     3, xioopen_rawip_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6, PF_INET6, 0, 0 HELP(":<host>:<protocol>") };
+const struct addrdesc xioaddr_rawip6_datagram= { "IP6-DATAGRAM",   3, xioopen_rawip_datagram, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_RANGE, PF_INET6, 0, 0 HELP(":<host>:<protocol>") };
+const struct addrdesc xioaddr_rawip6_recvfrom= { "IP6-RECVFROM",   3, xioopen_rawip_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_CHILD|GROUP_RANGE, PF_INET6, SOCK_RAW, 0 HELP(":<protocol>") };
+const struct addrdesc xioaddr_rawip6_recv    = { "IP6-RECV",       1, xioopen_rawip_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_RANGE,             PF_INET6, SOCK_RAW, 0 HELP(":<protocol>") };
 #endif
 
 
diff --git a/xio-rawip.h b/xio-rawip.h
index e6541e6..d88d3c2 100644
--- a/xio-rawip.h
+++ b/xio-rawip.h
@@ -5,17 +5,17 @@
 #ifndef __xio_rawip_h_included
 #define __xio_rawip_h_included 1
 
-extern const struct addrdesc addr_rawip_sendto;
-extern const struct addrdesc addr_rawip_datagram;
-extern const struct addrdesc addr_rawip_recvfrom;
-extern const struct addrdesc addr_rawip_recv;
-extern const struct addrdesc addr_rawip4_sendto;
-extern const struct addrdesc addr_rawip4_datagram;
-extern const struct addrdesc addr_rawip4_recvfrom;
-extern const struct addrdesc addr_rawip4_recv;
-extern const struct addrdesc addr_rawip6_sendto;
-extern const struct addrdesc addr_rawip6_datagram;
-extern const struct addrdesc addr_rawip6_recvfrom;
-extern const struct addrdesc addr_rawip6_recv;
+extern const struct addrdesc xioaddr_rawip_sendto;
+extern const struct addrdesc xioaddr_rawip_datagram;
+extern const struct addrdesc xioaddr_rawip_recvfrom;
+extern const struct addrdesc xioaddr_rawip_recv;
+extern const struct addrdesc xioaddr_rawip4_sendto;
+extern const struct addrdesc xioaddr_rawip4_datagram;
+extern const struct addrdesc xioaddr_rawip4_recvfrom;
+extern const struct addrdesc xioaddr_rawip4_recv;
+extern const struct addrdesc xioaddr_rawip6_sendto;
+extern const struct addrdesc xioaddr_rawip6_datagram;
+extern const struct addrdesc xioaddr_rawip6_recvfrom;
+extern const struct addrdesc xioaddr_rawip6_recv;
 
 #endif /* !defined(__xio_rawip_h_included) */
diff --git a/xio-readline.c b/xio-readline.c
index a17fe66..233366b 100644
--- a/xio-readline.c
+++ b/xio-readline.c
@@ -30,7 +30,7 @@ static int xioopen_readline(int argc, const char *argv[], struct opt *opts,
 			    int dummy1, int dummy2, int dummy3);
 
 
-const struct addrdesc addr_readline = { "readline", 3, xioopen_readline, GROUP_FD|GROUP_TERMIOS|GROUP_READLINE, 0, 0, 0 HELP(NULL) };
+const struct addrdesc xioaddr_readline = { "READLINE", 3, xioopen_readline, GROUP_FD|GROUP_TERMIOS|GROUP_READLINE, 0, 0, 0 HELP(NULL) };
 
 const struct optdesc opt_history_file = { "history-file", "history", OPT_HISTORY_FILE, GROUP_READLINE, PH_LATE, TYPE_STRING, OFUNC_OFFSET, XIO_OFFSETOF(para.readline.history_file) };
 const struct optdesc opt_prompt       = { "prompt",       NULL,      OPT_PROMPT,       GROUP_READLINE, PH_LATE, TYPE_STRING, OFUNC_OFFSET, XIO_OFFSETOF(para.readline.prompt) };
diff --git a/xio-readline.h b/xio-readline.h
index bd43b48..290189e 100644
--- a/xio-readline.h
+++ b/xio-readline.h
@@ -5,7 +5,7 @@
 #ifndef __xio_readline_h_included
 #define __xio_readline_h_included 1
 
-extern const struct addrdesc addr_readline;
+extern const struct addrdesc xioaddr_readline;
 
 extern const struct optdesc opt_history_file;
 extern const struct optdesc opt_prompt;
diff --git a/xio-sctp.c b/xio-sctp.c
index 61aee10..482b836 100644
--- a/xio-sctp.c
+++ b/xio-sctp.c
@@ -17,23 +17,23 @@
 /****** SCTP addresses ******/
 
 #if WITH_IP4 || WITH_IP6
-const struct addrdesc addr_sctp_connect = { "sctp-connect", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_UNSPEC HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_sctp_connect = { "SCTP-CONNECT", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_UNSPEC HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_sctp_listen  = { "sctp-listen",  1+XIO_RDWR, xioopen_ipapp_listen,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_UNSPEC HELP(":<port>") };
+const struct addrdesc xioaddr_sctp_listen  = { "SCTP-LISTEN",  1+XIO_RDWR, xioopen_ipapp_listen,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_UNSPEC HELP(":<port>") };
 #endif
 #endif
 
 #if WITH_IP4
-const struct addrdesc addr_sctp4_connect = { "sctp4-connect", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_SCTP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_sctp4_connect = { "SCTP4-CONNECT", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_SCTP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_sctp4_listen  = { "sctp4-listen", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_SCTP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET HELP(":<port>") };
+const struct addrdesc xioaddr_sctp4_listen  = { "SCTP4-LISTEN", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_SCTP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET HELP(":<port>") };
 #endif
 #endif /* WITH_IP4 */
 
 #if WITH_IP6
-const struct addrdesc addr_sctp6_connect = { "sctp6-connect", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET6 HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_sctp6_connect = { "SCTP6-CONNECT", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET6 HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_sctp6_listen  = { "sctp6-listen", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET6 HELP(":<port>") };
+const struct addrdesc xioaddr_sctp6_listen  = { "SCTP6-LISTEN", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_SCTP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_SCTP, PF_INET6 HELP(":<port>") };
 #endif
 #endif /* WITH_IP6 */
 
diff --git a/xio-sctp.h b/xio-sctp.h
index c8cc606..dab5d6f 100644
--- a/xio-sctp.h
+++ b/xio-sctp.h
@@ -5,12 +5,12 @@
 #ifndef __xio_sctp_h_included
 #define __xio_sctp_h_included 1
 
-extern const struct addrdesc addr_sctp_connect;
-extern const struct addrdesc addr_sctp_listen;
-extern const struct addrdesc addr_sctp4_connect;
-extern const struct addrdesc addr_sctp4_listen;
-extern const struct addrdesc addr_sctp6_connect;
-extern const struct addrdesc addr_sctp6_listen;
+extern const struct addrdesc xioaddr_sctp_connect;
+extern const struct addrdesc xioaddr_sctp_listen;
+extern const struct addrdesc xioaddr_sctp4_connect;
+extern const struct addrdesc xioaddr_sctp4_listen;
+extern const struct addrdesc xioaddr_sctp6_connect;
+extern const struct addrdesc xioaddr_sctp6_listen;
 
 extern const struct optdesc opt_sctp_nodelay;
 extern const struct optdesc opt_sctp_maxseg;
diff --git a/xio-socket.c b/xio-socket.c
index c2eaa8a..e5b8391 100644
--- a/xio-socket.c
+++ b/xio-socket.c
@@ -78,14 +78,14 @@ static int xiobind(
 
 #if WITH_GENERICSOCKET
 /* generic socket addresses */
-const struct addrdesc xioaddr_socket_connect = { "socket-connect",     1, xioopen_socket_connect,  GROUP_FD|GROUP_SOCKET|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<domain>:<protocol>:<remote-address>") };
+const struct addrdesc xioaddr_socket_connect = { "SOCKET-CONNECT",     1, xioopen_socket_connect,  GROUP_FD|GROUP_SOCKET|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<domain>:<protocol>:<remote-address>") };
 #if WITH_LISTEN
-const struct addrdesc xioaddr_socket_listen  = { "socket-listen",      1, xioopen_socket_listen,   GROUP_FD|GROUP_SOCKET|GROUP_LISTEN|GROUP_RANGE|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<domain>:<protocol>:<local-address>") };
+const struct addrdesc xioaddr_socket_listen  = { "SOCKET-LISTEN",      1, xioopen_socket_listen,   GROUP_FD|GROUP_SOCKET|GROUP_LISTEN|GROUP_RANGE|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<domain>:<protocol>:<local-address>") };
 #endif /* WITH_LISTEN */
-const struct addrdesc xioaddr_socket_sendto  = { "socket-sendto",      3, xioopen_socket_sendto,   GROUP_FD|GROUP_SOCKET,                         0, 0, 0 HELP(":<domain>:<type>:<protocol>:<remote-address>") };
-const struct addrdesc xioaddr_socket_datagram= { "socket-datagram",    3, xioopen_socket_datagram, GROUP_FD|GROUP_SOCKET|GROUP_RANGE,             0, 0, 0 HELP(":<domain>:<type>:<protocol>:<remote-address>") };
-const struct addrdesc xioaddr_socket_recvfrom= { "socket-recvfrom",    3, xioopen_socket_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_RANGE|GROUP_CHILD, 0, 0, 0 HELP(":<domain>:<type>:<protocol>:<local-address>") };
-const struct addrdesc xioaddr_socket_recv    = { "socket-recv",        1, xioopen_socket_recv,     GROUP_FD|GROUP_SOCKET|GROUP_RANGE,             0, 0, 0 HELP(":<domain>:<type>:<protocol>:<local-address>") };
+const struct addrdesc xioaddr_socket_sendto  = { "SOCKET-SENDTO",      3, xioopen_socket_sendto,   GROUP_FD|GROUP_SOCKET,                         0, 0, 0 HELP(":<domain>:<type>:<protocol>:<remote-address>") };
+const struct addrdesc xioaddr_socket_datagram= { "SOCKET-DATAGRAM",    3, xioopen_socket_datagram, GROUP_FD|GROUP_SOCKET|GROUP_RANGE,             0, 0, 0 HELP(":<domain>:<type>:<protocol>:<remote-address>") };
+const struct addrdesc xioaddr_socket_recvfrom= { "SOCKET-RECVFROM",    3, xioopen_socket_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_RANGE|GROUP_CHILD, 0, 0, 0 HELP(":<domain>:<type>:<protocol>:<local-address>") };
+const struct addrdesc xioaddr_socket_recv    = { "SOCKET-RECV",        1, xioopen_socket_recv,     GROUP_FD|GROUP_SOCKET|GROUP_RANGE,             0, 0, 0 HELP(":<domain>:<type>:<protocol>:<local-address>") };
 #endif /* WITH_GENERICSOCKET */
 
 
diff --git a/xio-socks.c b/xio-socks.c
index 4dde96b..519f80c 100644
--- a/xio-socks.c
+++ b/xio-socks.c
@@ -35,9 +35,9 @@ static int xioopen_socks4_connect(int argc, const char *argv[], struct opt *opts
 const struct optdesc opt_socksport = { "socksport", NULL, OPT_SOCKSPORT, GROUP_IP_SOCKS4, PH_LATE, TYPE_STRING, OFUNC_SPEC };
 const struct optdesc opt_socksuser = { "socksuser", NULL, OPT_SOCKSUSER, GROUP_IP_SOCKS4, PH_LATE, TYPE_NAME, OFUNC_SPEC };
 
-const struct addrdesc addr_socks4_connect = { "socks4", 3, xioopen_socks4_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_IP_SOCKS4|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<socks-server>:<host>:<port>") };
+const struct addrdesc xioaddr_socks4_connect = { "SOCKS4", 3, xioopen_socks4_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_IP_SOCKS4|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<socks-server>:<host>:<port>") };
 
-const struct addrdesc addr_socks4a_connect = { "socks4a", 3, xioopen_socks4_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_IP_SOCKS4|GROUP_CHILD|GROUP_RETRY, 1, 0, 0 HELP(":<socks-server>:<host>:<port>") };
+const struct addrdesc xioaddr_socks4a_connect = { "SOCKS4A", 3, xioopen_socks4_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_IP_SOCKS4|GROUP_CHILD|GROUP_RETRY, 1, 0, 0 HELP(":<socks-server>:<host>:<port>") };
 
 static int xioopen_socks4_connect(int argc, const char *argv[], struct opt *opts,
 				  int xioflags, xiofile_t *xxfd,
diff --git a/xio-socks.h b/xio-socks.h
index 9b948db..4844b4b 100644
--- a/xio-socks.h
+++ b/xio-socks.h
@@ -17,8 +17,8 @@ struct socks4 {
 extern const struct optdesc opt_socksport;
 extern const struct optdesc opt_socksuser;
 
-extern const struct addrdesc addr_socks4_connect;
-extern const struct addrdesc addr_socks4a_connect;
+extern const struct addrdesc xioaddr_socks4_connect;
+extern const struct addrdesc xioaddr_socks4a_connect;
 
 extern int _xioopen_socks4_prepare(const char *targetport, struct opt *opts, char **socksport, struct socks4 *sockhead, size_t *headlen);
 extern int
diff --git a/xio-stdio.c b/xio-stdio.c
index 0cae125..6c8d6dc 100644
--- a/xio-stdio.c
+++ b/xio-stdio.c
@@ -20,17 +20,17 @@ static int xioopen_stdfd(int argc, const char *argv[], struct opt *opts, int xio
 /* we specify all option groups that we can imagine for a FD, becasue the
    changed parsing mechanism does not allow us to check the type of FD before
    applying the options */
-const struct addrdesc addr_stdio  = { "stdio",  3, xioopen_stdio, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(NULL) };
-const struct addrdesc addr_stdin  = { "stdin",  1, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(NULL) };
-const struct addrdesc addr_stdout = { "stdout", 2, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 1, 0, 0 HELP(NULL) };
-const struct addrdesc addr_stderr = { "stderr", 2, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 2, 0, 0 HELP(NULL) };
+const struct addrdesc xioaddr_stdio  = { "STDIO",  3, xioopen_stdio, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(NULL) };
+const struct addrdesc xioaddr_stdin  = { "STDIN",  1, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(NULL) };
+const struct addrdesc xioaddr_stdout = { "STDOUT", 2, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 1, 0, 0 HELP(NULL) };
+const struct addrdesc xioaddr_stderr = { "STDERR", 2, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 2, 0, 0 HELP(NULL) };
 
 
 /* process a bidirectional "stdio" or "-" argument with options.
    generate a dual address. */
 int xioopen_stdio_bi(xiofile_t *sock) {
    struct opt *optspr;
-   groups_t groups1 = addr_stdio.groups;
+   groups_t groups1 = xioaddr_stdio.groups;
    int result;
 
    if (xioopen_makedual(sock) < 0) {
diff --git a/xio-stdio.h b/xio-stdio.h
index 7af87f0..7f7f9fb 100644
--- a/xio-stdio.h
+++ b/xio-stdio.h
@@ -9,9 +9,9 @@
 
 extern int xioopen_stdio_bi(xiofile_t *sock);
 
-extern const struct addrdesc addr_stdio;
-extern const struct addrdesc addr_stdin;
-extern const struct addrdesc addr_stdout;
-extern const struct addrdesc addr_stderr;
+extern const struct addrdesc xioaddr_stdio;
+extern const struct addrdesc xioaddr_stdin;
+extern const struct addrdesc xioaddr_stdout;
+extern const struct addrdesc xioaddr_stderr;
 
 #endif /* !defined(__xio_stdio_h_included) */
diff --git a/xio-system.c b/xio-system.c
index 93f29bf..7f859d0 100644
--- a/xio-system.c
+++ b/xio-system.c
@@ -20,7 +20,7 @@ static int xioopen_system(int arg, const char *argv[], struct opt *opts,
 		int dummy1, int dummy2, int dummy3
 		);
 
-const struct addrdesc addr_system = { "system", 3, xioopen_system, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, 1, 0, 0 HELP(":<shell-command>") };
+const struct addrdesc xioaddr_system = { "SYSTEM", 3, xioopen_system, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, 1, 0, 0 HELP(":<shell-command>") };
 
 
 static int xioopen_system(int argc, const char *argv[], struct opt *opts,
diff --git a/xio-system.h b/xio-system.h
index 9321bb6..7b1e5f3 100644
--- a/xio-system.h
+++ b/xio-system.h
@@ -5,6 +5,6 @@
 #ifndef __xio_system_h_included
 #define __xio_system_h_included 1
 
-extern const struct addrdesc addr_system;
+extern const struct addrdesc xioaddr_system;
 
 #endif /* !defined(__xio_system_h_included) */
diff --git a/xio-tcp.c b/xio-tcp.c
index 491cc72..5e2297c 100644
--- a/xio-tcp.c
+++ b/xio-tcp.c
@@ -17,23 +17,23 @@
 /****** TCP addresses ******/
 
 #if WITH_IP4 || WITH_IP6
-const struct addrdesc addr_tcp_connect = { "tcp-connect", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_UNSPEC HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_tcp_connect = { "TCP-CONNECT", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_UNSPEC HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_tcp_listen  = { "tcp-listen",  1+XIO_RDWR, xioopen_ipapp_listen,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_UNSPEC HELP(":<port>") };
+const struct addrdesc xioaddr_tcp_listen  = { "TCP-LISTEN",  1+XIO_RDWR, xioopen_ipapp_listen,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_UNSPEC HELP(":<port>") };
 #endif
 #endif
 
 #if WITH_IP4
-const struct addrdesc addr_tcp4_connect = { "tcp4-connect", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_TCP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_tcp4_connect = { "TCP4-CONNECT", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_TCP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_tcp4_listen  = { "tcp4-listen", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_TCP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET HELP(":<port>") };
+const struct addrdesc xioaddr_tcp4_listen  = { "TCP4-LISTEN", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_TCP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET HELP(":<port>") };
 #endif
 #endif /* WITH_IP4 */
 
 #if WITH_IP6
-const struct addrdesc addr_tcp6_connect = { "tcp6-connect", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET6 HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_tcp6_connect = { "TCP6-CONNECT", 1+XIO_RDWR, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_CHILD|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET6 HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_tcp6_listen  = { "tcp6-listen", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET6 HELP(":<port>") };
+const struct addrdesc xioaddr_tcp6_listen  = { "TCP6-LISTEN", 1+XIO_RDWR, xioopen_ipapp_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_TCP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE|GROUP_RETRY, SOCK_STREAM, IPPROTO_TCP, PF_INET6 HELP(":<port>") };
 #endif
 #endif /* WITH_IP6 */
 
diff --git a/xio-tcp.h b/xio-tcp.h
index ff20508..560889a 100644
--- a/xio-tcp.h
+++ b/xio-tcp.h
@@ -5,12 +5,12 @@
 #ifndef __xio_tcp_h_included
 #define __xio_tcp_h_included 1
 
-extern const struct addrdesc addr_tcp_connect;
-extern const struct addrdesc addr_tcp_listen;
-extern const struct addrdesc addr_tcp4_connect;
-extern const struct addrdesc addr_tcp4_listen;
-extern const struct addrdesc addr_tcp6_connect;
-extern const struct addrdesc addr_tcp6_listen;
+extern const struct addrdesc xioaddr_tcp_connect;
+extern const struct addrdesc xioaddr_tcp_listen;
+extern const struct addrdesc xioaddr_tcp4_connect;
+extern const struct addrdesc xioaddr_tcp4_listen;
+extern const struct addrdesc xioaddr_tcp6_connect;
+extern const struct addrdesc xioaddr_tcp6_listen;
 
 extern const struct optdesc opt_tcp_nodelay;
 extern const struct optdesc opt_tcp_maxseg;
diff --git a/xio-tun.c b/xio-tun.c
index 3851b03..b3d41e2 100644
--- a/xio-tun.c
+++ b/xio-tun.c
@@ -44,7 +44,7 @@ const struct optdesc opt_iff_automedia   = { "iff-automedia",   "automedia",   O
 const struct optdesc opt_route           = { "route",           NULL,          OPT_ROUTE,           GROUP_INTERFACE, PH_INIT, TYPE_STRING,   OFUNC_SPEC };
 #endif
 
-const struct addrdesc xioaddr_tun    = { "tun",    3, xioopen_tun, GROUP_FD|GROUP_CHR|GROUP_NAMED|GROUP_OPEN|GROUP_TUN, 0, 0, 0 HELP("[:<ip-addr>/<bits>]") };
+const struct addrdesc xioaddr_tun    = { "TUN",    3, xioopen_tun, GROUP_FD|GROUP_CHR|GROUP_NAMED|GROUP_OPEN|GROUP_TUN, 0, 0, 0 HELP("[:<ip-addr>/<bits>]") };
 /* "if-name"=tun3
 // "route"=address/netmask
 // "ip6-route"=address/netmask
diff --git a/xio-udp.c b/xio-udp.c
index 4496963..becef73 100644
--- a/xio-udp.c
+++ b/xio-udp.c
@@ -42,35 +42,35 @@ int _xioopen_udp_sendto(const char *hostname, const char *servname,
 			int xioflags, xiofile_t *xxfd, groups_t groups,
 			int pf, int socktype, int ipproto);
 
-const struct addrdesc addr_udp_connect  = { "udp-connect",    3, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP, SOCK_DGRAM, IPPROTO_UDP, PF_UNSPEC HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp_connect  = { "UDP-CONNECT",    3, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP, SOCK_DGRAM, IPPROTO_UDP, PF_UNSPEC HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_udp_listen   = { "udp-listen", 3, xioopen_ipdgram_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE, PF_UNSPEC, IPPROTO_UDP, PF_UNSPEC HELP(":<port>") };
+const struct addrdesc xioaddr_udp_listen   = { "UDP-LISTEN", 3, xioopen_ipdgram_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE, PF_UNSPEC, IPPROTO_UDP, PF_UNSPEC HELP(":<port>") };
 #endif /* WITH_LISTEN */
-const struct addrdesc addr_udp_sendto   = { "udp-sendto",   3, xioopen_udp_sendto,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP, PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
-const struct addrdesc addr_udp_recvfrom = { "udp-recvfrom",   3, xioopen_udp_recvfrom,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_CHILD|GROUP_RANGE, PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP HELP(":<port>") };
-const struct addrdesc addr_udp_recv     = { "udp-recv",       1, xioopen_udp_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE,             PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
-const struct addrdesc addr_udp_datagram = { "udp-datagram", 3, xioopen_udp_datagram,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE, PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp_sendto   = { "UDP-SENDTO",   3, xioopen_udp_sendto,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP, PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp_recvfrom = { "UDP-RECVFROM",   3, xioopen_udp_recvfrom,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_CHILD|GROUP_RANGE, PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP HELP(":<port>") };
+const struct addrdesc xioaddr_udp_recv     = { "UDP-RECV",       1, xioopen_udp_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE,             PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
+const struct addrdesc xioaddr_udp_datagram = { "UDP-DATAGRAM", 3, xioopen_udp_datagram,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE, PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
 
 #if WITH_IP4
-const struct addrdesc addr_udp4_connect = { "udp4-connect",    3, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP, SOCK_DGRAM, IPPROTO_UDP, PF_INET HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp4_connect  = { "UDP4-CONNECT",    3, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP, SOCK_DGRAM, IPPROTO_UDP, PF_INET HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_udp4_listen  = { "udp4-listen", 3, xioopen_ipdgram_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE, PF_INET, IPPROTO_UDP, PF_INET HELP(":<port>") };
+const struct addrdesc xioaddr_udp4_listen   = { "UDP4-LISTEN", 3, xioopen_ipdgram_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE, PF_INET, IPPROTO_UDP, PF_INET HELP(":<port>") };
 #endif /* WITH_LISTEN */
-const struct addrdesc addr_udp4_sendto  = { "udp4-sendto",     3, xioopen_udp_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP, PF_INET, SOCK_DGRAM, IPPROTO_UDP  HELP(":<host>:<port>") };
-const struct addrdesc addr_udp4_datagram = { "udp4-datagram",3, xioopen_udp_datagram,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_RANGE, PF_INET, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
-const struct addrdesc addr_udp4_recvfrom= { "udp4-recvfrom",   3, xioopen_udp_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_CHILD|GROUP_RANGE, PF_INET, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
-const struct addrdesc addr_udp4_recv    = { "udp4-recv",       1, xioopen_udp_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_RANGE,             PF_INET, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
+const struct addrdesc xioaddr_udp4_sendto   = { "UDP4-SENDTO",     3, xioopen_udp_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP, PF_INET, SOCK_DGRAM, IPPROTO_UDP  HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp4_datagram = { "UDP4-DATAGRAM",3, xioopen_udp_datagram,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_RANGE, PF_INET, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp4_recvfrom = { "UDP4-RECVFROM",   3, xioopen_udp_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_CHILD|GROUP_RANGE, PF_INET, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
+const struct addrdesc xioaddr_udp4_recv     = { "UDP4-RECV",       1, xioopen_udp_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP4|GROUP_IP_UDP|GROUP_RANGE,             PF_INET, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
 #endif /* WITH_IP4 */
 
 #if WITH_IP6
-const struct addrdesc addr_udp6_connect = { "udp6-connect",    3, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP, SOCK_DGRAM, IPPROTO_UDP, PF_INET6 HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp6_connect  = { "UDP6-CONNECT",    3, xioopen_ipapp_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP, SOCK_DGRAM, IPPROTO_UDP, PF_INET6 HELP(":<host>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_udp6_listen  = { "udp6-listen", 3, xioopen_ipdgram_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE, PF_INET6, IPPROTO_UDP, 0 HELP(":<port>") };
+const struct addrdesc xioaddr_udp6_listen   = { "UDP6-LISTEN", 3, xioopen_ipdgram_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_LISTEN|GROUP_CHILD|GROUP_RANGE, PF_INET6, IPPROTO_UDP, 0 HELP(":<port>") };
 #endif /* WITH_LISTEN */
-const struct addrdesc addr_udp6_sendto  = { "udp6-sendto",     3, xioopen_udp_sendto, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP, PF_INET6, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
-const struct addrdesc addr_udp6_datagram= { "udp6-datagram",   3, xioopen_udp_datagram,GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE, PF_INET6, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
-const struct addrdesc addr_udp6_recvfrom= { "udp6-recvfrom",   3, xioopen_udp_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_CHILD|GROUP_RANGE, PF_INET6, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
-const struct addrdesc addr_udp6_recv    = { "udp6-recv",       1, xioopen_udp_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE,             PF_INET6, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
+const struct addrdesc xioaddr_udp6_sendto   = { "UDP6-SENDTO",     3, xioopen_udp_sendto, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP, PF_INET6, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp6_datagram = { "UDP6-DATAGRAM",   3, xioopen_udp_datagram,GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE, PF_INET6, SOCK_DGRAM, IPPROTO_UDP HELP(":<host>:<port>") };
+const struct addrdesc xioaddr_udp6_recvfrom = { "UDP6-RECVFROM",   3, xioopen_udp_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_CHILD|GROUP_RANGE, PF_INET6, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
+const struct addrdesc xioaddr_udp6_recv     = { "UDP6-RECV",       1, xioopen_udp_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_IP6|GROUP_IP_UDP|GROUP_RANGE,             PF_INET6, SOCK_DGRAM, IPPROTO_UDP  HELP(":<port>") };
 #endif /* WITH_IP6 */
 
 
diff --git a/xio-udp.h b/xio-udp.h
index af07730..027b140 100644
--- a/xio-udp.h
+++ b/xio-udp.h
@@ -5,24 +5,24 @@
 #ifndef __xio_udp_h_included
 #define __xio_udp_h_included 1
 
-extern const struct addrdesc addr_udp_connect;
-extern const struct addrdesc addr_udp_listen;
-extern const struct addrdesc addr_udp_sendto;
-extern const struct addrdesc addr_udp_datagram;
-extern const struct addrdesc addr_udp_recvfrom;
-extern const struct addrdesc addr_udp_recv;
-extern const struct addrdesc addr_udp4_connect;
-extern const struct addrdesc addr_udp4_listen;
-extern const struct addrdesc addr_udp4_sendto;
-extern const struct addrdesc addr_udp4_datagram;
-extern const struct addrdesc addr_udp4_recvfrom;
-extern const struct addrdesc addr_udp4_recv;
-extern const struct addrdesc addr_udp6_connect;
-extern const struct addrdesc addr_udp6_listen;
-extern const struct addrdesc addr_udp6_sendto;
-extern const struct addrdesc addr_udp6_datagram;
-extern const struct addrdesc addr_udp6_recvfrom;
-extern const struct addrdesc addr_udp6_recv;
+extern const struct addrdesc xioaddr_udp_connect;
+extern const struct addrdesc xioaddr_udp_listen;
+extern const struct addrdesc xioaddr_udp_sendto;
+extern const struct addrdesc xioaddr_udp_datagram;
+extern const struct addrdesc xioaddr_udp_recvfrom;
+extern const struct addrdesc xioaddr_udp_recv;
+extern const struct addrdesc xioaddr_udp4_connect;
+extern const struct addrdesc xioaddr_udp4_listen;
+extern const struct addrdesc xioaddr_udp4_sendto;
+extern const struct addrdesc xioaddr_udp4_datagram;
+extern const struct addrdesc xioaddr_udp4_recvfrom;
+extern const struct addrdesc xioaddr_udp4_recv;
+extern const struct addrdesc xioaddr_udp6_connect;
+extern const struct addrdesc xioaddr_udp6_listen;
+extern const struct addrdesc xioaddr_udp6_sendto;
+extern const struct addrdesc xioaddr_udp6_datagram;
+extern const struct addrdesc xioaddr_udp6_recvfrom;
+extern const struct addrdesc xioaddr_udp6_recv;
 
 extern int _xioopen_ipdgram_listen(struct single *sfd,
 	int xioflags, union sockaddr_union *us, socklen_t uslen,
diff --git a/xio-unix.c b/xio-unix.c
index 6315a66..12a6c57 100644
--- a/xio-unix.c
+++ b/xio-unix.c
@@ -38,23 +38,23 @@ int xioopen_unix_client(int argc, const char *argv[], struct opt *opts, int xiof
 /* the first free parameter is 0 for "normal" unix domain sockets, or 1 for
    abstract unix sockets (Linux); the second and third free parameter are
    unsused */
-const struct addrdesc xioaddr_unix_connect = { "unix-connect",  3, xioopen_unix_connect,  GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_unix_connect = { "UNIX-CONNECT",  3, xioopen_unix_connect,  GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
 #if WITH_LISTEN
-const struct addrdesc xioaddr_unix_listen  = { "unix-listen",   3, xioopen_unix_listen,   GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_unix_listen  = { "UNIX-LISTEN",   3, xioopen_unix_listen,   GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<filename>") };
 #endif /* WITH_LISTEN */
-const struct addrdesc xioaddr_unix_sendto  = { "unix-sendto",   3, xioopen_unix_sendto,   GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
-const struct addrdesc xioaddr_unix_recvfrom= { "unix-recvfrom", 3, xioopen_unix_recvfrom, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY|GROUP_CHILD,              0, 0, 0 HELP(":<filename>") };
-const struct addrdesc xioaddr_unix_recv    = { "unix-recv",     1, xioopen_unix_recv,     GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
-const struct addrdesc xioaddr_unix_client  = { "unix-client",   3, xioopen_unix_client,   GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_unix_sendto  = { "UNIX-SENDTO",   3, xioopen_unix_sendto,   GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_unix_recvfrom= { "UNIX-RECVFROM", 3, xioopen_unix_recvfrom, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY|GROUP_CHILD,              0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_unix_recv    = { "UNIX-RECV",     1, xioopen_unix_recv,     GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_unix_client  = { "UNIX-CLIENT",   3, xioopen_unix_client,   GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          0, 0, 0 HELP(":<filename>") };
 #if WITH_ABSTRACT_UNIXSOCKET
-const struct addrdesc xioaddr_abstract_connect = { "abstract-connect",  3, xioopen_unix_connect,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_abstract_connect = { "ABSTRACT-CONNECT",  3, xioopen_unix_connect,  GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
 #if WITH_LISTEN
-const struct addrdesc xioaddr_abstract_listen  = { "abstract-listen",   3, xioopen_unix_listen,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY, 1, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_abstract_listen  = { "ABSTRACT-LISTEN",   3, xioopen_unix_listen,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY, 1, 0, 0 HELP(":<filename>") };
 #endif /* WITH_LISTEN */
-const struct addrdesc xioaddr_abstract_sendto  = { "abstract-sendto",   3, xioopen_unix_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
-const struct addrdesc xioaddr_abstract_recvfrom= { "abstract-recvfrom", 3, xioopen_unix_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY|GROUP_CHILD,              1, 0, 0 HELP(":<filename>") };
-const struct addrdesc xioaddr_abstract_recv    = { "abstract-recv",     1, xioopen_unix_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
-const struct addrdesc xioaddr_abstract_client  = { "abstract-client",   3, xioopen_unix_client,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_abstract_sendto  = { "ABSTRACT-SENDTO",   3, xioopen_unix_sendto,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_abstract_recvfrom= { "ABSTRACT-RECVFROM", 3, xioopen_unix_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY|GROUP_CHILD,              1, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_abstract_recv    = { "ABSTRACT-RECV",     1, xioopen_unix_recv,     GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
+const struct addrdesc xioaddr_abstract_client  = { "ABSTRACT-CLIENT",   3, xioopen_unix_client,   GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY,                          1, 0, 0 HELP(":<filename>") };
 #endif /* WITH_ABSTRACT_UNIXSOCKET */
 
 const struct optdesc xioopt_unix_tightsocklen = { "unix-tightsocklen",    "tightsocklen",  OPT_UNIX_TIGHTSOCKLEN,  GROUP_SOCK_UNIX, PH_PREBIND, TYPE_BOOL, OFUNC_OFFSET, XIO_OFFSETOF(para.socket.un.tight), XIO_SIZEOF(para.socket.un.tight) };
diff --git a/xio-vsock.c b/xio-vsock.c
index 29025f8..e6e6465 100644
--- a/xio-vsock.c
+++ b/xio-vsock.c
@@ -22,15 +22,9 @@ static int xioopen_vsock_listen(int argc, const char *argv[], struct opt *opts,
 
 static void xiolog_vsock_cid(void);
 
-const struct addrdesc addr_vsock_connect = { "vsock-connect", 1 + XIO_RDWR,
-    xioopen_vsock_connect,
-    GROUP_FD|GROUP_SOCKET|GROUP_CHILD|GROUP_RETRY,
-    0, 0, 0 HELP(":<cid>:<port>") };
+const struct addrdesc xioaddr_vsock_connect = { "VSOCK-CONNECT", 1+XIO_RDWR, xioopen_vsock_connect, GROUP_FD|GROUP_SOCKET|GROUP_CHILD|GROUP_RETRY,              0, 0, 0 HELP(":<cid>:<port>") };
 #if WITH_LISTEN
-const struct addrdesc addr_vsock_listen  = { "vsock-listen", 1 + XIO_RDWR,
-    xioopen_vsock_listen,
-    GROUP_FD|GROUP_SOCKET|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY,
-    0, 0, 0 HELP(":<port>") };
+const struct addrdesc xioaddr_vsock_listen  = { "VSOCK-LISTEN",  1+XIO_RDWR, xioopen_vsock_listen,  GROUP_FD|GROUP_SOCKET|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY, 0, 0, 0 HELP(":<port>") };
 #endif /* WITH_LISTEN */
 
 
diff --git a/xio-vsock.h b/xio-vsock.h
index 8d3dc14..b5c36ae 100644
--- a/xio-vsock.h
+++ b/xio-vsock.h
@@ -8,8 +8,8 @@
 
 #if WITH_VSOCK
 
-extern const struct addrdesc addr_vsock_connect;
-extern const struct addrdesc addr_vsock_listen;
+extern const struct addrdesc xioaddr_vsock_connect;
+extern const struct addrdesc xioaddr_vsock_listen;
 
 extern int xiosetsockaddrenv_vsock(int idx, char *namebuff, size_t namelen,
 				   char *valuebuff, size_t valuelen,
diff --git a/xiohelp.c b/xiohelp.c
index 71256de..1c69cd1 100644
--- a/xiohelp.c
+++ b/xiohelp.c
@@ -73,22 +73,40 @@ static char *optionphasenames[] = {
 
 /* print a line about a single option */
 static int xiohelp_option(FILE *of, const struct optname *on, const char *name) {
-   int j;
+   int chars;
+   int i, j;
    groups_t groups;
    bool occurred;
 
-   fprintf(of, "      %s\tgroups=", name);
-   groups = on->desc->group;  occurred = false;
-   for (j = 0; j < 32; ++j) {
+   chars = fprintf(of, "      %s", name);
+   i = (16 - chars + 7) / 8;
+   for (; i > 0; --i) { fputc('\t', of); }
+   fputc('\t', of);
+
+   fputs("groups=", of);
+   groups = on->desc->group;
+   occurred = false;
+   chars = 7;
+   for (j = 0; j < 8*sizeof(groups_t); ++j) {
       if (groups & 1) {
-	 if (occurred)  { fputc(',', of); }
-	 fprintf(of, "%s", addressgroupnames[j]);
+	 if (occurred) {
+	    fputc(',', of);
+	    ++chars;
+	 }
+	 fputs(addressgroupnames[j], of);
+	 chars += strlen(addressgroupnames[j]);
 	 occurred = true;
       }
       groups >>= 1;
    }
-   fprintf(of, "\tphase=%s", optionphasenames[on->desc->phase]);
-   fprintf(of, "\ttype=%s", optiontypenames[on->desc->type]);
+   i = (24 - chars + 7) / 8;
+   for (; i > 0; --i) { fputc('\t', of); }
+
+   chars = fprintf(of, "phase=%s", optionphasenames[on->desc->phase]);
+   i = (24 - chars + 7) / 8;
+   for (; i > 0; --i) { fputc('\t', of); }
+
+   fprintf(of, "type=%s", optiontypenames[on->desc->type]);
    fputc('\n', of);
    return 0;
 }
@@ -102,14 +120,9 @@ int xioopenhelp(FILE *of,
    groups_t groups;
    bool occurred;
 
-   fputs("   bi-address:\n", of);
-   fputs("      pipe[,<opts>]\tgroups=FD,FIFO\n", of);
-   if (level == 2) {
-      fputs("      echo is an alias for pipe\n", of);
-      fputs("      fifo is an alias for pipe\n", of);
-   }
-   fputs("      <single-address>!!<single-address>\n", of);
+   fputs("   bi-address:  /* is an address that may act both as data sync and source */\n", of);
    fputs("      <single-address>\n", of);
+   fputs("      <single-address>!!<single-address>\n", of);
    fputs("   single-address:\n", of);
    fputs("      <address-head>[,<opts>]\n", of);
    fputs("   address-head:\n", of);
@@ -117,10 +130,16 @@ int xioopenhelp(FILE *of,
    i = 0;
    while (addressnames[i].name) {
       if (!strcmp(an->name, an->desc->defname)) {
+	 int chars, i;
+
          /* it is a canonical address name */
-	 fprintf(of, "      %s", an->name);
+	 chars = fprintf(of, "      %s", an->name);
 	 if (an->desc->syntax) {
-	    fputs(an->desc->syntax, of); }
+	    fputs(an->desc->syntax, of);
+	    chars += strlen(an->desc->syntax);
+	 }
+	 i = (40 - chars + 7) / 8;
+	 for (; i > 0; --i) { fputc('\t', of); }
 	 fputs("\tgroups=", of);
 	 groups = an->desc->groups;  occurred = false;
 	 for (j = 0; j < 32; ++j) {
@@ -133,7 +152,13 @@ int xioopenhelp(FILE *of,
 	 }
 	 fputc('\n', of);
       } else if (level == 2) {
-         fprintf(of, "         %s is an alias name for %s\n", an->name, an->desc->defname);
+	 int chars, i;
+
+         chars = fprintf(of, "      %s", an->name);
+	 i = (40 - chars + 7) / 8;
+	 for (; i > 0; --i) { fputc('\t', of); }
+
+         fprintf(of, "\tis an alias name for %s\n", an->desc->defname);
       }
       ++an; ++i;
    }
@@ -149,10 +174,16 @@ int xioopenhelp(FILE *of,
    fputs("   opt:\n", of);
    on = optionnames;
    while (on->name != NULL) {
-      if (on->desc->nickname!= NULL
+      if (on->desc->nickname != NULL
 	  && !strcmp(on->name, on->desc->nickname)) {
 	 if (level == 2) {
-	    fprintf(of, "      %s is an alias for %s\n", on->name, on->desc->defname);
+	    int chars, i;
+
+	    chars = fprintf(of, "      %s", on->name);
+	    i = (16 - chars + 7) / 8;
+	    for (; i > 0; --i) { fputc('\t', of); }
+
+	    fprintf(of, "\tis an alias for %s\n", on->desc->defname);
 	 } else {
 	    xiohelp_option(of, on, on->name);
 	 }
@@ -163,7 +194,13 @@ int xioopenhelp(FILE *of,
 	 if (!strcmp(on->name, on->desc->defname)) {
 	    xiohelp_option(of, on, on->name);
 	 } else {
-	    fprintf(of, "      %s is an alias for %s\n", on->name, on->desc->defname);
+	    int chars, i;
+
+	    chars = fprintf(of, "      %s", on->name);
+	    i = (16 - chars + 7) / 8;
+	    for (; i > 0; --i) { fputc('\t', of); }
+
+	    fprintf(of, "\tis an alias for %s\n", on->desc->defname);
 	 }
       }
       ++on;
diff --git a/xioopen.c b/xioopen.c
index 2d94fa5..680ad44 100644
--- a/xioopen.c
+++ b/xioopen.c
@@ -20,300 +20,300 @@ static int xioopen_dual(xiofile_t *xfd, int xioflags);
 const struct addrname addressnames[] = {
 #if 1
 #if WITH_STDIO
-   { "-",		&addr_stdio },
+   { "-",			&xioaddr_stdio },
 #endif
 #if defined(WITH_UNIX) && defined(WITH_ABSTRACT_UNIXSOCKET)
-   { "abstract",		&xioaddr_abstract_client },
-   { "abstract-client",		&xioaddr_abstract_client },
-   { "abstract-connect",	&xioaddr_abstract_connect },
+   { "ABSTRACT",		&xioaddr_abstract_client },
+   { "ABSTRACT-CLIENT",		&xioaddr_abstract_client },
+   { "ABSTRACT-CONNECT",	&xioaddr_abstract_connect },
 #if WITH_LISTEN
-   { "abstract-listen",		&xioaddr_abstract_listen },
+   { "ABSTRACT-LISTEN",		&xioaddr_abstract_listen },
 #endif
-   { "abstract-recv",		&xioaddr_abstract_recv },
-   { "abstract-recvfrom",	&xioaddr_abstract_recvfrom },
-   { "abstract-sendto",		&xioaddr_abstract_sendto },
+   { "ABSTRACT-RECV",		&xioaddr_abstract_recv },
+   { "ABSTRACT-RECVFROM",	&xioaddr_abstract_recvfrom },
+   { "ABSTRACT-SENDTO",		&xioaddr_abstract_sendto },
 #endif /* defined(WITH_UNIX) && defined(WITH_ABSTRACT_UNIXSOCKET) */
 #if WITH_CREAT
-   { "creat",	&addr_creat },
-   { "create",	&addr_creat },
+   { "CREAT",			&xioaddr_creat },
+   { "CREATE",			&xioaddr_creat },
 #endif
 #if WITH_GENERICSOCKET
-   { "datagram",		&xioaddr_socket_datagram },
-   { "dgram",			&xioaddr_socket_datagram },
+   { "DATAGRAM",		&xioaddr_socket_datagram },
+   { "DGRAM",			&xioaddr_socket_datagram },
 #endif
 #if WITH_OPENSSL
-   { "dtls",		&xioaddr_openssl_dtls_client },
-   { "dtls-c",		&xioaddr_openssl_dtls_client },
-   { "dtls-client",	&xioaddr_openssl_dtls_client },
-   { "dtls-connect",	&xioaddr_openssl_dtls_client },
+   { "DTLS",		&xioaddr_openssl_dtls_client },
+   { "DTLS-C",		&xioaddr_openssl_dtls_client },
+   { "DTLS-CLIENT",	&xioaddr_openssl_dtls_client },
+   { "DTLS-CONNECT",	&xioaddr_openssl_dtls_client },
 #if WITH_LISTEN
-   { "dtls-l",		&xioaddr_openssl_dtls_server },
-   { "dtls-listen",	&xioaddr_openssl_dtls_server },
-   { "dtls-server",	&xioaddr_openssl_dtls_server },
+   { "DTLS-L",		&xioaddr_openssl_dtls_server },
+   { "DTLS-LISTEN",	&xioaddr_openssl_dtls_server },
+   { "DTLS-SERVER",	&xioaddr_openssl_dtls_server },
 #endif
 #endif
 #if WITH_PIPE
-   { "echo",		&addr_pipe },
+   { "ECHO",			&xioaddr_pipe },
 #endif
 #if WITH_EXEC
-   { "exec",		&addr_exec },
+   { "EXEC",			&xioaddr_exec },
 #endif
 #if WITH_FDNUM
-   { "fd",		&addr_fd },
+   { "FD",			&xioaddr_fd },
 #endif
 #if WITH_PIPE
-   { "fifo",		&addr_pipe },
+   { "FIFO",			&xioaddr_pipe },
 #endif
 #if WITH_FILE
-   { "file",		&addr_open },
+   { "FILE",			&xioaddr_open },
 #endif
 #if WITH_GOPEN
-   { "gopen",	&addr_gopen },
+   { "GOPEN",			&xioaddr_gopen },
 #endif
 #if WITH_INTERFACE
-   { "if",		&xioaddr_interface },
+   { "IF",		&xioaddr_interface },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_TCP
-   { "inet",		&addr_tcp_connect },
+   { "INET",			&xioaddr_tcp_connect },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_TCP && WITH_LISTEN
-   { "inet-l",	&addr_tcp_listen },
-   { "inet-listen",	&addr_tcp_listen },
+   { "INET-L",			&xioaddr_tcp_listen },
+   { "INET-LISTEN",		&xioaddr_tcp_listen },
 #endif
 #if WITH_IP4 && WITH_TCP
-   { "inet4",	&addr_tcp4_connect },
+   { "INET4",			&xioaddr_tcp4_connect },
 #endif
 #if WITH_IP4 && WITH_TCP && WITH_LISTEN
-   { "inet4-l",	&addr_tcp4_listen },
-   { "inet4-listen",	&addr_tcp4_listen },
+   { "INET4-L",			&xioaddr_tcp4_listen },
+   { "INET4-LISTEN",		&xioaddr_tcp4_listen },
 #endif
 #if WITH_IP6 && WITH_TCP
-   { "inet6",	&addr_tcp6_connect },
+   { "INET6",			&xioaddr_tcp6_connect },
 #endif
 #if WITH_IP6 && WITH_TCP && WITH_LISTEN
-   { "inet6-l",	&addr_tcp6_listen },
-   { "inet6-listen",	&addr_tcp6_listen },
+   { "INET6-L",			&xioaddr_tcp6_listen },
+   { "INET6-LISTEN",		&xioaddr_tcp6_listen },
 #endif
 #if WITH_INTERFACE
-   { "interface",	&xioaddr_interface },
+   { "INTERFACE",	&xioaddr_interface },
 #endif
 #if WITH_RAWIP
 #if (WITH_IP4 || WITH_IP6)
-   { "ip",		&addr_rawip_sendto },
-   { "ip-datagram",	&addr_rawip_datagram },
-   { "ip-dgram",	&addr_rawip_datagram },
-   { "ip-recv",		&addr_rawip_recv },
-   { "ip-recvfrom",	&addr_rawip_recvfrom },
-   { "ip-send",	&addr_rawip_sendto },
-   { "ip-sendto",	&addr_rawip_sendto },
+   { "IP",			&xioaddr_rawip_sendto },
+   { "IP-DATAGRAM",		&xioaddr_rawip_datagram },
+   { "IP-DGRAM",		&xioaddr_rawip_datagram },
+   { "IP-RECV",			&xioaddr_rawip_recv },
+   { "IP-RECVFROM",		&xioaddr_rawip_recvfrom },
+   { "IP-SEND",			&xioaddr_rawip_sendto },
+   { "IP-SENDTO",		&xioaddr_rawip_sendto },
 #endif
 #if WITH_IP4
-   { "ip4",		&addr_rawip4_sendto },
-   { "ip4-datagram",	&addr_rawip4_datagram },
-   { "ip4-dgram",	&addr_rawip4_datagram },
-   { "ip4-recv",	&addr_rawip4_recv },
-   { "ip4-recvfrom",	&addr_rawip4_recvfrom },
-   { "ip4-send",	&addr_rawip4_sendto },
-   { "ip4-sendto",	&addr_rawip4_sendto },
+   { "IP4",			&xioaddr_rawip4_sendto },
+   { "IP4-DATAGRAM",		&xioaddr_rawip4_datagram },
+   { "IP4-DGRAM",		&xioaddr_rawip4_datagram },
+   { "IP4-RECV",		&xioaddr_rawip4_recv },
+   { "IP4-RECVFROM",		&xioaddr_rawip4_recvfrom },
+   { "IP4-SEND",		&xioaddr_rawip4_sendto },
+   { "IP4-SENDTO",		&xioaddr_rawip4_sendto },
 #endif
 #if WITH_IP6
-   { "ip6",		&addr_rawip6_sendto },
-   { "ip6-datagram",	&addr_rawip6_datagram },
-   { "ip6-dgram",	&addr_rawip6_datagram },
-   { "ip6-recv",	&addr_rawip6_recv },
-   { "ip6-recvfrom",	&addr_rawip6_recvfrom },
-   { "ip6-send",	&addr_rawip6_sendto },
-   { "ip6-sendto",	&addr_rawip6_sendto },
+   { "IP6",			&xioaddr_rawip6_sendto },
+   { "IP6-DATAGRAM",		&xioaddr_rawip6_datagram },
+   { "IP6-DGRAM",		&xioaddr_rawip6_datagram },
+   { "IP6-RECV",		&xioaddr_rawip6_recv },
+   { "IP6-RECVFROM",		&xioaddr_rawip6_recvfrom },
+   { "IP6-SEND",		&xioaddr_rawip6_sendto },
+   { "IP6-SENDTO",		&xioaddr_rawip6_sendto },
 #endif
 #endif /* WITH_RAWIP */
 #if WITH_UNIX
-   { "local",	&xioaddr_unix_connect },
+   { "LOCAL",	&xioaddr_unix_connect },
 #endif
 #if WITH_FILE
-   { "open",		&addr_open },
+   { "OPEN",			&xioaddr_open },
 #endif
 #if WITH_OPENSSL
-   { "openssl",		&xioaddr_openssl },
-   { "openssl-connect",		&xioaddr_openssl },
-   { "openssl-dtls-client",	&xioaddr_openssl_dtls_client },
-   { "openssl-dtls-connect",	&xioaddr_openssl_dtls_client },
+   { "OPENSSL",		&xioaddr_openssl },
+   { "OPENSSL-CONNECT",		&xioaddr_openssl },
+   { "OPENSSL-DTLS-CLIENT",	&xioaddr_openssl_dtls_client },
+   { "OPENSSL-DTLS-CONNECT",	&xioaddr_openssl_dtls_client },
 #if WITH_LISTEN
-   { "openssl-dtls-listen",		&xioaddr_openssl_dtls_server },
-   { "openssl-dtls-server",		&xioaddr_openssl_dtls_server },
-   { "openssl-listen",		&xioaddr_openssl_listen },
+   { "OPENSSL-DTLS-LISTEN",		&xioaddr_openssl_dtls_server },
+   { "OPENSSL-DTLS-SERVER",		&xioaddr_openssl_dtls_server },
+   { "OPENSSL-LISTEN",		&xioaddr_openssl_listen },
 #endif
 #endif
 #if WITH_PIPE
-   { "pipe",		&addr_pipe },
+   { "PIPE",			&xioaddr_pipe },
 #endif
 #if WITH_PROXY
-   { "proxy",		&addr_proxy_connect },
-   { "proxy-connect",	&addr_proxy_connect },
+   { "PROXY",			&xioaddr_proxy_connect },
+   { "PROXY-CONNECT",		&xioaddr_proxy_connect },
 #endif
 #if WITH_PTY
-   { "pty",		&addr_pty },
+   { "PTY",			&xioaddr_pty },
 #endif
 #if WITH_READLINE
-   { "readline",	&addr_readline },
+   { "READLINE",		&xioaddr_readline },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_SCTP
-   { "sctp",		&addr_sctp_connect },
-   { "sctp-connect",	&addr_sctp_connect },
+   { "SCTP",			&xioaddr_sctp_connect },
+   { "SCTP-CONNECT",		&xioaddr_sctp_connect },
 #if WITH_LISTEN
-   { "sctp-l",		&addr_sctp_listen },
-   { "sctp-listen",	&addr_sctp_listen },
+   { "SCTP-L",			&xioaddr_sctp_listen },
+   { "SCTP-LISTEN",		&xioaddr_sctp_listen },
 #endif
 #if WITH_IP4
-   { "sctp4",		&addr_sctp4_connect },
-   { "sctp4-connect",	&addr_sctp4_connect },
+   { "SCTP4",			&xioaddr_sctp4_connect },
+   { "SCTP4-CONNECT",		&xioaddr_sctp4_connect },
 #if WITH_LISTEN
-   { "sctp4-l",		&addr_sctp4_listen },
-   { "sctp4-listen",	&addr_sctp4_listen },
+   { "SCTP4-L",			&xioaddr_sctp4_listen },
+   { "SCTP4-LISTEN",		&xioaddr_sctp4_listen },
 #endif
 #endif /* WITH_IP4 */
 #if WITH_IP6
-   { "sctp6",		&addr_sctp6_connect },
-   { "sctp6-connect",	&addr_sctp6_connect },
+   { "SCTP6",			&xioaddr_sctp6_connect },
+   { "SCTP6-CONNECT",		&xioaddr_sctp6_connect },
 #if WITH_LISTEN
-   { "sctp6-l",		&addr_sctp6_listen },
-   { "sctp6-listen",	&addr_sctp6_listen },
+   { "SCTP6-L",			&xioaddr_sctp6_listen },
+   { "SCTP6-LISTEN",		&xioaddr_sctp6_listen },
 #endif
 #endif /* WITH_IP6 */
 #endif /* (WITH_IP4 || WITH_IP6) && WITH_SCTP */
 #if WITH_GENERICSOCKET
-   { "sendto",			&xioaddr_socket_sendto },
+   { "SENDTO",			&xioaddr_socket_sendto },
 #endif
 #if WITH_GENERICSOCKET
-   { "socket-connect",		&xioaddr_socket_connect },
-   { "socket-datagram",		&xioaddr_socket_datagram },
+   { "SOCKET-CONNECT",		&xioaddr_socket_connect },
+   { "SOCKET-DATAGRAM",		&xioaddr_socket_datagram },
 #if WITH_LISTEN
-   { "socket-listen",		&xioaddr_socket_listen },
+   { "SOCKET-LISTEN",		&xioaddr_socket_listen },
 #endif /* WITH_LISTEN */
-   { "socket-recv",		&xioaddr_socket_recv },
-   { "socket-recvfrom",		&xioaddr_socket_recvfrom },
-   { "socket-sendto",		&xioaddr_socket_sendto },
+   { "SOCKET-RECV",		&xioaddr_socket_recv },
+   { "SOCKET-RECVFROM",		&xioaddr_socket_recvfrom },
+   { "SOCKET-SENDTO",		&xioaddr_socket_sendto },
 #endif
 #if WITH_SOCKS4
-   { "socks",	&addr_socks4_connect },
-   { "socks4",	&addr_socks4_connect },
+   { "SOCKS",			&xioaddr_socks4_connect },
+   { "SOCKS4",			&xioaddr_socks4_connect },
 #endif
 #if WITH_SOCKS4A
-   { "socks4a",	&addr_socks4a_connect },
+   { "SOCKS4A",			&xioaddr_socks4a_connect },
 #endif
 #if WITH_OPENSSL
-   { "ssl",		&xioaddr_openssl },
+   { "SSL",		&xioaddr_openssl },
 #if WITH_LISTEN
-   { "ssl-l",		&xioaddr_openssl_listen },
+   { "SSL-L",		&xioaddr_openssl_listen },
 #endif
 #endif
 #if WITH_STDIO
-   { "stderr",	&addr_stderr },
-   { "stdin",	&addr_stdin },
-   { "stdio",	&addr_stdio },
-   { "stdout",	&addr_stdout },
+   { "STDERR",			&xioaddr_stderr },
+   { "STDIN",			&xioaddr_stdin },
+   { "STDIO",			&xioaddr_stdio },
+   { "STDOUT",			&xioaddr_stdout },
 #endif
 #if WITH_SYSTEM
-   { "system",	&addr_system },
+   { "SYSTEM",			&xioaddr_system },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_TCP
-   { "tcp",		&addr_tcp_connect },
-   { "tcp-connect",	&addr_tcp_connect },
+   { "TCP",			&xioaddr_tcp_connect },
+   { "TCP-CONNECT",		&xioaddr_tcp_connect },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_TCP && WITH_LISTEN
-   { "tcp-l",	&addr_tcp_listen },
-   { "tcp-listen",	&addr_tcp_listen },
+   { "TCP-L",			&xioaddr_tcp_listen },
+   { "TCP-LISTEN",		&xioaddr_tcp_listen },
 #endif
 #if WITH_IP4 && WITH_TCP
-   { "tcp4",		&addr_tcp4_connect },
-   { "tcp4-connect",	&addr_tcp4_connect },
+   { "TCP4",			&xioaddr_tcp4_connect },
+   { "TCP4-CONNECT",		&xioaddr_tcp4_connect },
 #endif
 #if WITH_IP4 && WITH_TCP && WITH_LISTEN
-   { "tcp4-l",	&addr_tcp4_listen },
-   { "tcp4-listen",	&addr_tcp4_listen },
+   { "TCP4-L",			&xioaddr_tcp4_listen },
+   { "TCP4-LISTEN",		&xioaddr_tcp4_listen },
 #endif
 #if WITH_IP6 && WITH_TCP
-   { "tcp6",		&addr_tcp6_connect },
-   { "tcp6-connect",	&addr_tcp6_connect },
+   { "TCP6",			&xioaddr_tcp6_connect },
+   { "TCP6-CONNECT",		&xioaddr_tcp6_connect },
 #endif
 #if WITH_IP6 && WITH_TCP && WITH_LISTEN
-   { "tcp6-l",	&addr_tcp6_listen },
-   { "tcp6-listen",	&addr_tcp6_listen },
+   { "TCP6-L",			&xioaddr_tcp6_listen },
+   { "TCP6-LISTEN",		&xioaddr_tcp6_listen },
 #endif
 #if WITH_TUN
-   { "tun",		&xioaddr_tun },
+   { "TUN",		&xioaddr_tun },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_UDP
-   { "udp",		&addr_udp_connect },
+   { "UDP",			&xioaddr_udp_connect },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_UDP
-   { "udp-connect",	&addr_udp_connect },
-   { "udp-datagram",	&addr_udp_datagram },
-   { "udp-dgram",	&addr_udp_datagram },
+   { "UDP-CONNECT",		&xioaddr_udp_connect },
+   { "UDP-DATAGRAM",		&xioaddr_udp_datagram },
+   { "UDP-DGRAM",		&xioaddr_udp_datagram },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_UDP && WITH_LISTEN
-   { "udp-l",	&addr_udp_listen },
-   { "udp-listen",	&addr_udp_listen },
+   { "UDP-L",			&xioaddr_udp_listen },
+   { "UDP-LISTEN",		&xioaddr_udp_listen },
 #endif
 #if (WITH_IP4 || WITH_IP6) && WITH_UDP
-   { "udp-recv",	&addr_udp_recv },
-   { "udp-recvfrom",	&addr_udp_recvfrom },
-   { "udp-send",	&addr_udp_sendto },
-   { "udp-sendto",	&addr_udp_sendto },
+   { "UDP-RECV",		&xioaddr_udp_recv },
+   { "UDP-RECVFROM",		&xioaddr_udp_recvfrom },
+   { "UDP-SEND",		&xioaddr_udp_sendto },
+   { "UDP-SENDTO",		&xioaddr_udp_sendto },
 #endif
 #if WITH_IP4 && WITH_UDP
-   { "udp4",		&addr_udp4_connect },
-   { "udp4-connect",	&addr_udp4_connect },
-   { "udp4-datagram",	&addr_udp4_datagram },
-   { "udp4-dgram",	&addr_udp4_datagram },
+   { "UDP4",			&xioaddr_udp4_connect },
+   { "UDP4-CONNECT",		&xioaddr_udp4_connect },
+   { "UDP4-DATAGRAM",		&xioaddr_udp4_datagram },
+   { "UDP4-DGRAM",		&xioaddr_udp4_datagram },
 #endif
 #if WITH_IP4 && WITH_UDP && WITH_LISTEN
-   { "udp4-l",		&addr_udp4_listen },
-   { "udp4-listen",	&addr_udp4_listen },
+   { "UDP4-L",			&xioaddr_udp4_listen },
+   { "UDP4-LISTEN",		&xioaddr_udp4_listen },
 #endif
 #if WITH_IP4 && WITH_UDP
-   { "udp4-recv",	&addr_udp4_recv },
-   { "udp4-recvfrom",	&addr_udp4_recvfrom },
-   { "udp4-send",	&addr_udp4_sendto },
-   { "udp4-sendto",	&addr_udp4_sendto },
+   { "UDP4-RECV",		&xioaddr_udp4_recv },
+   { "UDP4-RECVFROM",		&xioaddr_udp4_recvfrom },
+   { "UDP4-SEND",		&xioaddr_udp4_sendto },
+   { "UDP4-SENDTO",		&xioaddr_udp4_sendto },
 #endif
 #if WITH_IP6 && WITH_UDP
-   { "udp6",		&addr_udp6_connect },
-   { "udp6-connect",	&addr_udp6_connect },
-   { "udp6-datagram",	&addr_udp6_datagram },
-   { "udp6-dgram",	&addr_udp6_datagram },
+   { "UDP6",			&xioaddr_udp6_connect },
+   { "UDP6-CONNECT",		&xioaddr_udp6_connect },
+   { "UDP6-DATAGRAM",		&xioaddr_udp6_datagram },
+   { "UDP6-DGRAM",		&xioaddr_udp6_datagram },
 #endif
 #if WITH_IP6 && WITH_UDP && WITH_LISTEN
-   { "udp6-l",		&addr_udp6_listen },
-   { "udp6-listen",	&addr_udp6_listen },
+   { "UDP6-L",			&xioaddr_udp6_listen },
+   { "UDP6-LISTEN",		&xioaddr_udp6_listen },
 #endif
 #if WITH_IP6 && WITH_UDP
-   { "udp6-recv",	&addr_udp6_recv },
-   { "udp6-recvfrom",	&addr_udp6_recvfrom },
-   { "udp6-send",	&addr_udp6_sendto },
-   { "udp6-sendto",	&addr_udp6_sendto },
+   { "UDP6-RECV",		&xioaddr_udp6_recv },
+   { "UDP6-RECVFROM",		&xioaddr_udp6_recvfrom },
+   { "UDP6-SEND",		&xioaddr_udp6_sendto },
+   { "UDP6-SENDTO",		&xioaddr_udp6_sendto },
 #endif
 #if WITH_UNIX
-   { "unix",		&xioaddr_unix_client },
-   { "unix-client",	&xioaddr_unix_client },
-   { "unix-connect",	&xioaddr_unix_connect },
+   { "UNIX",		&xioaddr_unix_client },
+   { "UNIX-CLIENT",	&xioaddr_unix_client },
+   { "UNIX-CONNECT",	&xioaddr_unix_connect },
 #endif
 #if WITH_UNIX && WITH_LISTEN
-   { "unix-l",		&xioaddr_unix_listen },
-   { "unix-listen",	&xioaddr_unix_listen },
+   { "UNIX-L",		&xioaddr_unix_listen },
+   { "UNIX-LISTEN",	&xioaddr_unix_listen },
 #endif
 #if WITH_UNIX
-   { "unix-recv",	&xioaddr_unix_recv },
-   { "unix-recvfrom",	&xioaddr_unix_recvfrom },
-   { "unix-send",	&xioaddr_unix_sendto },
-   { "unix-sendto",	&xioaddr_unix_sendto },
+   { "UNIX-RECV",	&xioaddr_unix_recv },
+   { "UNIX-RECVFROM",	&xioaddr_unix_recvfrom },
+   { "UNIX-SEND",	&xioaddr_unix_sendto },
+   { "UNIX-SENDTO",	&xioaddr_unix_sendto },
 #endif
 #if WITH_VSOCK
-   { "vsock",		&addr_vsock_connect },
-   { "vsock-connect",	&addr_vsock_connect },
+   { "VSOCK",			&xioaddr_vsock_connect },
+   { "VSOCK-CONNECT",		&xioaddr_vsock_connect },
 #endif
 #if WITH_VSOCK && WITH_LISTEN
-   { "vsock-l",		&addr_vsock_listen },
-   { "vsock-listen",	&addr_vsock_listen },
+   { "VSOCK-L",			&xioaddr_vsock_listen },
+   { "VSOCK-LISTEN",		&xioaddr_vsock_listen },
 #endif
 #else /* !0 */
 #  if WITH_INTEGRATE
@@ -537,7 +537,7 @@ static xiosingle_t *xioparse_single(const char **addr) {
 #if WITH_FDNUM
       } else if (isdigit(token[0]&0xff) && token[1] == '\0') {
 	 Info1("interpreting address \"%s\" as file descriptor", token);
-	 addrdesc = &addr_fd;
+	 addrdesc = &xioaddr_fd;
 	 if ((sfd->argv[sfd->argc++] = strdup("FD")) == NULL) {
 	    Error("strdup(\"FD\"): out of memory");
 	 }
@@ -549,7 +549,7 @@ static xiosingle_t *xioparse_single(const char **addr) {
 #if WITH_GOPEN
       } else if (strchr(token, '/')) {
 	 Info1("interpreting address \"%s\" as file name", token);
-	 addrdesc = &addr_gopen;
+	 addrdesc = &xioaddr_gopen;
 	 if ((sfd->argv[sfd->argc++] = strdup("GOPEN")) == NULL) {
 	    Error("strdup(\"GOPEN\"): out of memory");
 	 }