Hello
I have been using a network card 3com 3c905c-tx/tx-M [tornado](rev 78) for a few years. as part of a work I had to add a new network card which is an intel

the two cards don't work together. the intel has become eth0 and there's no way to get the 3com to be recognized, in fact she's recognized in lspci, but she's not eth1 nor eth2, nothing
ifconfig -a doest show it
how do i reconfigure it

i reload the modules 3c59x and mii the syslog shows it.. I doesn't show the intel anywhere.. and there's still no eth1 or other.
thank you
mario

I had something similar to this happen to me, and I had to edit the following file to rename things a bit. I think I had two cards that were both named eth0 or something like that. There's probably a better way to do it, but that's beyond me. Don't forget to make a backup copy before you changes things.

/etc/udev/rules.d/z25_persistent-net.rules

the issue has been solved. in fact the Intel was taking the place of the 3com it was no driver compiled on the kernel for it. normally Intel uses the 'e100 module but my kernel didn't have it, so when the 3c59x loaded at startup it took the first pci network device which was the Intel...which i don't know why.. do you? anyway looking in Google Linux i compiled the e100 driver and loaded it as a module and now there's a eth0 and eth1.
as for udev i read something in debianhelp forums because i want the Intel to be eth1 and not eth0 and i don't know yet how to change it. i would love to do it the smart way not just by swapping pci slots that would be too easy.

just change them in the file I referenced