Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 126902)
+++ channels/chan_sip.c	(arbetskopia)
@@ -14113,7 +14113,8 @@
 			else
 				ast_log(LOG_DEBUG, "Got a SIP re-transmit of INVITE for call %s\n", p->callid);
 		}
-		reinvite = 1;
+		if (!ast_test_flag(req, SIP_PKT_IGNORE))
+			reinvite = 1;
 		c = p->owner;
 	}