diff -u ./osipua/src/osipdialog.c
--- ./osipua/src/osipdialog.c	2004-06-14 11:53:05.000000000 -0400
+++ ./osipua/src/osipdialog.c	2004-07-05 20:21:23.000000000 -0400
@@ -772,7 +772,7 @@
 	{
 		char *tmp = (char *) smalloc (90 * sizeof (char));
 		sprintf (tmp, "SIP/2.0/UDP %s:%i;branch=z9hG4bK%u",
-			 ua->ua_ipaddr,
+			 call_leg->localip,
 			 ua->ua_port, via_branch_new_random ());
 		msg_setvia (sipmesg, tmp);
 		sfree (tmp);
@@ -782,7 +782,7 @@
 	{
 		char *tmp = (char *) smalloc (90 * sizeof (char));
 		sprintf (tmp, "SIP/2.0/UDP [%s]:%i;branch=z9hG4bK%u",
-			 ua->ua_ipaddr,
+			 call_leg->localip,
 			 ua->ua_port, via_branch_new_random ());
 		msg_setvia (sipmesg, tmp);
 		sfree (tmp);