Hello, I'm using CentOS 5.7 and the internal sip_profile for eth0 and the external sip_profile for eth1. I can register phones on either network, make calls between either network, observe presence updates on either network. Everything is working well, except I have one-way Instant-Messaging (IM) between a softphone on the eth0 network and a softphone on the eth1 network. An IM from internal-to-external works fine. An IM from external-to-internal is not displayed at the softphone. In the latter case, I see Freeswitch sending the SIP MESSAGE with correct content, but it's source IP address is the eth1/external IP, instead of the eth0/internal IP. I'm not sure if this is a bug or a configuration issue? Do you know where Freeswitch pulls the source IP in this case? Thanks, Jerry