[gentoo-user] Question about ARPing

[Martin Tedjawardhana]

Hello people,

I have a gentoo box with 2 NICs. eth0 with DHCP connected to the internet and eth1 with 192.168.0.1 ip, set manually; connected to the local network. This computer doesn't route anything and iptables is off. Recently I received a mail from the network admin who is really anal complaining that my box responds to 192.168.0.1 arping. So if its arpinged from the outside, eth0 will show its MAC address; giving the impression that eth0 has 192.168.0.1 address. Normal ping to 192.168.0.1 would result nothing though.

So why is eth0 responding to 192.168.0.1 arping although it does not have that address? How can I remedy this? How can I block arping?

Thank you in advance.

Regards,

Martin

P.S.: Kernel 2.6.10