I have a system with 2 Ethernet adapters, 10.37.56.x (dedicated to VoIP) and 192.168.10.x The default gateway is on the 192.168.10 network. We've installed HMP 3.0 Windows SU349 and configured it to use the 10.37.56.x address. When we attempt to register to the PBX (also on the 10.37.56.x subnet), the REGISTER packet is sent out the 10.37.56.x adapter but with a VIA header referencing the 192.168.10.x network. I cannot tell why this is. I've confirmed with traceroute that traffic is directly routed out the 10.37.56.x network. I've also tried setting the local 10.37.56.x IP in the u_ipaddr.ipv4 member of the IP_VIRTBOARD structure, but still the VIA header is being inserted. On what basis does HMP decide to insert VIA headers in outgoing SIP messages?
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