RE: arp problem

2.4 kernels require a patch...
http://www.linuxvirtualserver.org/~julian/#hidden

> This comes up every year or so on some list or another.
> 
> Linux will send traffic for any of it's addresses through any 
> interface.
> This is allowed in rfc 1122 section 3.3.4.2. You can change 
> this behavior
> by doing this
> 
> echo 1 > /proc/sys/net/ipv4/conf/all/hidden
> echo 1 > /proc/sys/net/ipv4/conf/eth0/hidden
> echo 1 > /proc/sys/net/ipv4/conf/eth1/hidden
> 
> > We have linux box running kernel 2.4 with 2 NICs.