diff -u ./osipua/src/osipdialog.c
--- ./osipua/src/osipdialog.c	2004-01-03 13:15:39.000000000 -0500
+++ ./osipua/src/osipdialog.c	2004-06-14 11:53:05.000000000 -0400
@@ -1526,8 +1526,6 @@
 
 	from_clone (call_leg->from, &(request->from));
 
-	from_set_tag (request->from, from_tag_new_random ());
-
 	if (0 == strcmp ("REGISTER", method_name))
 	{
 		url_init (&request->strtline->rquri);
@@ -1602,6 +1600,10 @@
 				goto brood_error_1;
 		}
 	}
+
+	/* Do not set the from_tag until after REGISTER treatment. */
+	from_set_tag (request->from, from_tag_new_random ());
+
 	if (osip_ua_has_specific_bind(ua)){
 		call_leg->localip=sgetcopy(ua->contact->url->host);
 	}else {