I'm new to OpenBSD so I don't have a clue where to start in troubleshooting this problem. I have enough *nix experience that I was able to install OpenBSD for first time ever and get PF working, but that was with a lot of help with google. I've tried searching and searching for about a week now and still cant find anything about how to resolve this issue.

I haven't figured out exactly how often my external interface dies yet but it seems like anywhere between 24-72 hours. Sometimes I can't do anything external the firewall, and sometimes I can do a nslookup but can't reach a web page (port 80). I was reseting the machine and this fixed the problem. Then I found out about pfctl -f and started issuing that command. As soon as the firewall (pf) is reset is starts working again. Does anybody have any ideas where I can start looking to try and solve this problem?

The firewall is an old Intel Celeron Dell small desktop system which I installed two extra NICs in (Intel, and DCI If I rem correctly). One is external, one is internal, and one is setup for wireless.

Thanks!!