issue with multiple subnets

Hi,

I am using siproxd on my NAT firewall. I have multiple subnets with different VoIP clients in my environment (let's call them LAN and GUEST). My configuration looks like this:

if_inbound  = eth0
if_outbound = ppp0
hosts_allow_reg = 192.168.0.0/16

On eth0 I have my LAN subnet (192.168.1.x), the siproxd/firewall address is 192.168.1.1. VoIP calls from the same subnet (clients registered through siproxd) work like a charm. The issue is with clients from my GUEST net (192.168.10.x).

My GUEST net is on eth1 (192.168.10.1). The clients from the GUEST net can also use 192.168.1.1 as a SIP proxy, but in this case RTP streams only work in one direction. The firewall rules itself should not be an issue, as I have allowed all LAN <-> GUEST communication for testing reasons.

My suspicion is that spixroxd gets confused when rewriting the RTP source/destination address. Is there any way to work around this so that clients from subnets which are not the same as the "if_inbound" subnet can still use siproxd? I really want to avoid running a seperate siproxd instance for every subnet.


Thanks,
Jonas