Connecting fails if AAAA record is present, but no Server listening on IPv6
When Gajim finds an AAAA-Record, it tries to connect ONLY via IPv6. If the Jabber Server on the Server isn't running on IPv6 (in this case because ejabberd won't run IPv4 and IPv6 on OpenBSD), Gajim just gives up and never tries to connect via v4.