--- channels/sip/reqresp_parser.c-ORG	2015-10-03 22:58:12.714759547 +0200
+++ channels/sip/reqresp_parser.c	2015-10-04 09:48:38.851693648 +0200
@@ -2323,7 +2323,7 @@
 
 	/* store the port, we have to handle ipv6 addresses containing ':'
 	 * characters gracefully */
-	if (((parm = strchr(v->sent_by, ']')) && *(++parm) == ':') || (parm = strchr(v->sent_by, ':'))) {
+	if (((parm = strchr(v->sent_by, ']')) && *(++parm) == ':') || (!(parm = strchr(v->sent_by, ']')) && (parm = strchr(v->sent_by, ':')))) {
 		char *endptr;
 
 		v->port = strtol(++parm, &endptr, 10);