I'm building routers. It's difficult to tell in advance which NIC will be assigned eth0 and which will assigned eth1 when using two NICs. Ping testing usually clears up this simple problem. The identification problem gets worse when adding a third NIC, after sorting out the first two NICs. Frequently the eth0 or eth1 assignments for the first two NICs change. Of course adding a fourth and fifth NIC multiplies the identification problem. Yes, some of my routers are supporting five network segments. My question is, what's the algorithm for assigning Ethernet designations? I know it not placement order in the PCI bus, and I know its not the NIC data-link address. So what is it? Thanks ...John -- John Telford - Owner JohnTelford.com LLC 503-292-6865 - fax:503-292-3094 john@johntelford.com - www.johntelford.com _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/