http://www.kamailio.org/wiki/devel/completing_outbound?&#work_required_…
I am running in outbound_mode 2 in the registrar, since I have a mixed set of clients.
Clients that DO support outbound doesn't get a Require: header back in the response.
"If outbound registration succeeded, as indicated by the presence of
the outbound option-tag in the Require header field of a successful
registration response, the UA begins sending keep-alives as described
in Section 4.4."
RFC 5626.
This client changed the source code faster than I could, but I still consider it a bug in
our registrar mode 2.
/O