Thank you, I just was not sure what else would cause the relayed packets to not be sent out to my fios router. As mentioned, I can pick any other server in my network and I can see, in the pcap file, that the relay is attempted to the selected server. I verified our ACL and it is it open for TCP output to any IP and Port so that is not the issue. -----Original Message----- From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Alex Balashov Sent: Wednesday, December 26, 2018 12:55 PM To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: [EXT] Re: [SR-Users] Using a network STUN Server As STUN is a client-side construct, I am not aware of any functionality Kamailio might have to make *use* of a STUN server for its own representations about its reachability. But I could be wrong. -- Sent from mobile. Apologies for brevity and errors. _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users