[Unix-help] Information needed on ARP

[Satyarth Negi]

Hello Everyone,

I have a query. I want my linux box to respond to ARP query for an IP (
172.16.45.203 ) without plumbing this IP on any of my interface. My
kernel version is 2.6.4. This IP is assigned to me and is not in
conflict with any other machine.

I tried using this command on my linux box.

arp -s 172.16.45.203 00:13:21:64:09:28 pub

After running the above comamnd 'arp -a' shows this:


? (172.16.45.1) at 00:18:18:42:AD:66 [ether] on eth0
? (172.16.45.203) at * PERM PUP on eth0

But when i try to ping 172.16.45.203 from some other remote machine,
it doesnt get pinged. tcpdump shows that my linux box does get ARP
query for this IP from remote machine. But it doesnt seem to respond
to them.

Please help.
Thanks
SN