Merged revisions 113927 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r113927 | mmichelson | 2008-04-09 15:54:31 -0500 (Wed, 09 Apr 2008) | 8 lines

We need to set the persistant_route [sic] parameter for the sip_pvt
during the initial INVITE, no matter if we're building the route set from
an INVITE request or response.

(closes issue #12391)
Reported by: benjaminbohlmann
Tested by: benjaminbohlmann

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@113928 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -9976,8 +9976,9 @@ static void build_route(struct sip_pvt *p, struct sip_request *req, int backward
 		free_old_route(p->route);
 		p->route = NULL;
 	}
-	
-	p->route_persistant = backwards;
+
+	/* We only want to create the route set the first time this is called */
+	p->route_persistant = 1;
 	
 	/* Build a tailq, then assign it to p->route when done.
 	 * If backwards, we add entries from the head so they end up