> I've got a NetBSD (1.2 beta, july 19th) box w/two 3c509's.  Sometimes 
> when I boot, the boards are not always detected in the same order - ep0
> becomes ep1 and ep1 becomes ep0 as the following lines saved by
> syslog show:
> 
> Aug  6 00:20:45 ... : ep0 at isa0 port 0x300-0x30f irq 3: 3Com 3C509 Ethernet
> Aug  6 00:20:45 ... : ep0: aui/bnc/utp address 00:a0:24:0f:12:05
> Aug  6 00:20:45 ... : ep1 at isa0 port 0x310-0x31f irq 10: 3Com 3C509 Ethernet
> Aug  6 00:20:46 ... : ep1: aui/bnc/utp address 00:20:af:bf:be:a9
> ------------------------------------------------------------------------------
> Aug  6 00:28:11 ... : ep0 at isa0 port 0x310-0x31f irq 10: 3Com 3C509 Ethernet
> Aug  6 00:28:11 ... : ep0: aui/bnc/utp address 00:20:af:bf:be:a9
> Aug  6 00:28:11 ... : ep1 at isa0 port 0x300-0x30f irq 3: 3Com 3C509 Ethernet
> Aug  6 00:28:11 ... : ep1: aui/bnc/utp address 00:a0:24:0f:12:05
> 
> This switch usually happens after I've run the DOS config utility (3c5x9cfg).

Have you turned off "Plug and Pray" in config utility ?
My solution is to distinguish the cards by MAC address in netstart,
"ifconfig -a" will tell you "who is who".
It's useful with multiple PCI cards too.

-- 
Zdenek Salvet                                              salvet@ics.muni.cz 
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           If God had meant for us to be in the Army,
         we would have been born with green, baggy skin.