I think I’m able to connect with Ekiga, at least it reports
“registered”. Curiously, when I exit Ekiga and switch to SFLphone, it isn’t able to connect with the exact same parameters; it just says
“trying” and never resolves.

I’m not able to test outside connectivity because of too many hops:

thufir@doge:~$
thufir@doge:~$ sudo sipsak -vv -s sip:thufir@ekiga.net -m “hi”
No SRV record: _sip._tcp.ekiga.net No SRV record: _sip._udp.ekiga.net using A record: ekiga.net Max-Forwards set to 0

message received:
SIP/2.0 483 Too Many Hops Via: SIP/2.0/UDP
192.168.1.3:44370;branch=z9hG4bK.6f1c2f33;rportD370;alias;received