Don't attempt to make use of the dynamic_exclude_static ACL if DNS lookup fails.

(closes issue ASTERISK-18321)
Reported by Dan Lukes
Patches:
	ASTERISK-18321.patch by Mark Michelson (license #5049)
........

Merged revisions 364341 from http://svn.asterisk.org/svn/asterisk/branches/1.8

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10@364342 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 1d218e1855ae94cb598733141c92e4dc7f99c6f4..25056ded4314b69445263306a6d83574ea4c4f86 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -28694,7 +28694,7 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, str
 
                ast_string_field_set(peer, tohost, srvlookup);
 
-               if (global_dynamic_exclude_static) {
+               if (global_dynamic_exclude_static && !ast_sockaddr_isnull(&peer->addr)) {
                        int ha_error = 0;
                        sip_cfg.contact_ha = ast_append_ha("deny", ast_sockaddr_stringify_addr(&peer->addr), 
                                                        sip_cfg.contact_ha, &ha_error);