Hi, I noticed that pjsip_transport_register_type() in PJSIP 2.5.5 doesn't let the choice to create type other than IPv4, as we can't register the type with PJSIP_TRANSPORT_IPV6 flag. Is anyone as a good solution to solve that with existing API (I've missed something?), or does we need a patch? Regards -- Guillaume Roguez | Senior Free Software Consultant Ring Project Development Director - https://ring.cx RingID: 007871859FFA8E8FFDE776A6BA8E8FA35ABD9A7B PGP : 2A3A3627C9DCA7E733EE1034820371F4E07DE571