I've been using a Compaq Netelligent 10/100 TX dual port PCI card for a
while now in my NAT box, and it performs beautifully at 100mbit full-duplex.
The stuff reported by dmesg is:

tl0 at pci2 dev 0 function 0
tl0: Compaq Dual Port Netelligent 10/100 TX
tl0: Ethernet address 00:08:c7:a4:a9:40
tl0: interrupting at irq 12
nsphy0 at tl0 phy 1: DP83840 10/100 media interface, rev. 1
nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
tlphy0 at tl0 phy 31: ThunderLAN 10BASE-T media interface, rev. 5
tlphy0: 10base5
tl1 at pci2 dev 1 function 0
tl1: Compaq Dual Port Netelligent 10/100 TX
tl1: Ethernet address 00:08:c7:a4:a9:c0
tl1: interrupting at irq 10
nsphy1 at tl1 phy 1: DP83840 10/100 media interface, rev. 1
nsphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
tlphy1 at tl1 phy 31: ThunderLAN 10BASE-T media interface, rev. 5
tlphy1: 10base5

On Thu, Jul 18, 2002 at 06:33:34PM +0200, Manuel Bouyer wrote:
> Hi,
> I've got too many troubles with the quad-port ethernet I have here (can't
> keep with the load at 100Mbs), and I start wondering if a quad-port PCI ethernet
> can really work if it includes a PCI/PCI bridge (maybe a multifunction
> PCI chip would be better).
> 
> Does anyone know of a good dual-port PCI ethernet adapter, based on chips
> supported by NetBSD ? One with hardware checksum support (e.g based on
> 3c905C-TX chips) would be a bonus, but getting one which doesn't loose packets
> at 100Mbs would already be nice :)
> 
> --
> Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
> --

-- 
/~\ The ASCII                         Sean Davis
\ / Ribbon Campaign                    aka dive
 X  Against HTML
/ \ Email!                   http://endersgame.net/~dive/