Global nta_is_internal_msg (msg_t const *msg): Use nta_msg_is_internal() instead
Global nta_leg_client_route (nta_leg_t *leg, sip_record_route_t const *route, sip_contact_t const *contact): Use nta_leg_client_reroute() instead.
Global nta_msg_ackbye (nta_agent_t *a, msg_t *msg): This was a bad idea: see sf.net bug #1750691. It can be used to amplify DoS attacks. Let UAS take care of retransmission timeout and let it terminate the session. As of 1.12.7, this function just returns -1.
Global NTATAG_ALIASES (x)