Having a really basic network problem that I've tried 2 hardware solutions to without resolution:
Obsd machine has 2 nics and has had right along. I've used the nic that dc0 is attached to many times. I've now installed a second nic on another machine (running gentoo linux) to talk to that second nic on obsd. Nics are recognized on both sides and the new one on the gentoo box can be used to access other machines on the subnet 192.168.0.0 so I know it works. Now the kicker: Ifconfig on obsd machine shows `no carrier' for that interface (dc0) when I plug the cat5 cable into the respective nics. At first I thought the added nic might be bad so changed it out for another I tested. I get the same ifconfig output on obsd when I connect its dc0 to the added nic on gentoo, `no carrier' I've tested by pulling cables to make sure the addresses are on the interfaces I think they are on. The `no carrier' flag is replaced with `active' if I connect dc0 to the other (not the newly added one) nic on gentoo box. Or to a router. As I've mentioned the newly added nic will work on the gentoo box its installed on and can communicate to where ever I plug it in. Except dc0. If I hadn't tried two nics and 3 different PSI slots, and a new cat5 cable, I wouldn't be so flummuxed. Can anyone spot whatever it is I'm overlooking or not testing?