On Wed, 2005-05-25 at 19:02 +0100, T. Horsnell wrote: > Hi all, > I have a system with dual gigabit ethernet ports. > I've assigned them each an ip address, and am using > tcpdump and ping to check that they work as expected. > They dont. > > If I ping, from another box, the address associated with eth1, > the traffic appears on eth0. This only happens when I ping from > another Linux box - if I ping from one of my Alpha boxes, everything > works as expected, i.e. pings addressed to the ipaddress > allocated to eth0 appear on eth0, and pings to the ipaddress > allocated to eth1 appear on eth1. > > I'm running FC3 with kernel 2.6.10 on the dual-eth box, and I've > tried pinging from RH7.3, RH9 and FC3 boxes, all with the same > result. > > It appears from the tcpdump output below, that ls1 is returing the > mac address of the eth1 interface *and* the address of the eth0 > interface. Is this proper? What am I doing wrong? > > Cheers, > Terry. > You are using 2 interfaces on the same subnet on this machine. This has historically never worked reliably. If you put one of the interfaces on one subnet and the other on a different subnet I expect it will work better (and as expected).
