My VoIP provider supports both IPv4 and IPV6 registrations. I can only have one registration active at a time. Freeswitch is attempting both IPv4 and IPv6 connections. Randomly, sometimes a IPv4 connection is the first (only) registration established; other times it is the IPv6 connection. How to I configure Freeswitch to deterministically only attempt one type (my choice of either IPv4 or IPv6) of connection? freeswitch@ip-172-31-33-109.ec2.internal> sofia status Name Type Data State ============================================================================ ===================== external-ipv6 profile sip:mod_sofia@[::1]:5080 RUNNING (0) external-ipv6::switch2voip.us gateway sip:XXXXXXXXXX@66.33.147.150 REGED external profile sip:mod_sofia@54.174.255.168:5080 RUNNING (0) external::switch2voip.us gateway sip:XXXXXXXXXX@66.33.147.150 TRYING (retry: 20s) 172.31.33.109 alias internal ALIASED internal-ipv6 profile sip:mod_sofia@[::1]:5060 RUNNING (0) internal profile sip:mod_sofia@54.174.255.168:5060 RUNNING (0) ============================================================================ ===================== 4 profiles 1 alias freeswitch@ip-172-31-33-109.ec2.internal> Thanks, George