Kamailio 3.1.2
I am using Kamailio in front of Freeswitch as simple sip router. To do 
multi-tenant in Freeswitch I created SIP domain (fs2000.ly.net) and used as sip 
domain inside my sip phone. This domain does not map to any real IP and no 
entry in our DNS server. If I sent the call directly to Freeswitch, it works 
fine and registered with Freeswitch. When I tried to go through Kamailio using 
dispatcher to route the call to freeswitch, I got this error:
ERROR: <core> [resolve.c:1540]: ERROR: sip_hostport2su: could not resolve 
hostname: "fs2000.ly.net"

The strange thing is that sometime the call did go through kamailio and 
registered with freeswitch. 
Whenever I restart Kamailio, I got above error and then the error went away by 
itself. Sometime took a minute and sometime took several hours. And sometime 
the error come back without restart.

Does anybody know why? Why dispatcher want to resolve the hostname when it only 
lookup dispatcher for destination IP?

Gary

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