two ethernet ports on one PCI NIC?

["Chris Evans" <chris1@psyctc.org>]

I run a small postfix/ecartis Email list service (double opt in) for 
some charities.  My firewall is due to be replaced and I'd like to go 
for one of these new tiny, very quiet boxes since the old things I've 
got do create a great racket in my study and take up space.  All the 
tiny boxes I'm considering have one ethernet port on the motherboard 
but only one PCI slot.  Anyone know of a reliable dual ethernet NIC 
for PCI that has linux drivers (Debian tested ideally)?

TIA,

Chris
PSYCTC: Psychotherapy, Psychology, Psychiatry, Counselling
   and Therapeutic Communities; practice, research, 
   teaching and consultancy.
Chris Evans & Jo-anne Carlyle
http://psyctc.org/ Email: chris@psyctc.org