Installed a second NIC for Pluto, Asterisk logins fail

[archived]

I had Asterisk working pretty well and then installed a second network interface card and did a clean install but then neither X-Lite nor a Linksys phone can log in to Asterisk. Using SSH and "sip debug" I've seen that they register with Asterisk ok, there's clearly traffic reaching the Asterisk server, but then I see "SIP/2.0 404 Not found". I've tried setting "nat" to "yes" but I've also tried logging in while connected to each of the two NICs. Will I have to take out the second network card and/or reinstall?