The kernel is 2.4.18, from Redhat. I've looked at some of the code and I
think this might actually be a hardware bug. I'm helping setup a 3 port
firewall, I'm remote so I haven't been hands on, the guy has a quad
ethernet card in it. Between kernel installs eth0, eth1, eth2, and eth3
seem to change which socket on the card they are.
Anyone seen anything like this before? The hardware didn't change and
to my knowledge no BIOS changes have happened. I'd assume that the PCI
bus would be enumerated the same each time and that the kernel, barring
changes to PCI device discovery, would give the same ethernet channel to
the same socket each time. It boots consistently when we figure out
what port is what.
In this particular case it's potentially a big security concern, if we
swapped the DMZ and protected zones and didn't notice then his network
might be exposed.
thanks,
Ian
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