conclusion about my sctp experiment was that after i got sctp activated
in the proxy and tried to forward a request out using sctp transport,
nothing happened. wireshark didn't show any packet going out after proxy
printed
Dec 23 13:18:08 sars /usr/sbin/sip-proxy[30485]: INFO: Routing INVITE
<sip:XXXXX@X.X.X.X:8000;transport=sctp>
and called t_relay.
-- juha