Nope, you will just have to work around it or use a different product.It's pretty odd that an interface is automatically configured with an IP address and that it routes traffic to it even though the interface is not plugged in.
Is there away to disable the LAN port? The lan port is causing problems.If the IP address of the wan port is 192.168.0.10 the lan port seems to get configured as 192.168.1.1. This causes the SPA not to be able to talk to a voip server on 192.168...