Hi guzzi,
I posted my NIC hardware info in a response to another thread, but for what it's worth I have an older MSI motherboard here with a built-in Realtek chipset, works fine with the original MultiMac drivers as well as the later MMRE, although the MMRE do cause a trap under very high loads.
Vendor 10ECh Realtek Semiconductor Co., Ltd.
Device 8168h RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
Command 0107h (I/O Access, Memory Access, BusMaster, System Errors)
Status 0010h (Has Capabilities List, Fast Timing)
Revision 03h, Header Type 00h, Bus Latency Timer 00h
Self test 00h (Self test not supported)
Cache line size 64 Bytes (16 DWords)
PCI Class Network, type Ethernet
Subsystem ID 75761462h Onboard RTL8111b on MSI P965 Platinum Mainboard (Guess Only!)