This has been brought up on the list many times. The host RFC seems to
indicate that a host should respond to ARPs for any of it's addresses.
On Sat, 26 Feb 2000, Brian wrote:
>
> Is linux's ARP implementation RFC compliant? I am still looking for the
> ARP rfc........but the way I remember it, a machine shouldn't respond to
> an ARP request unless the requesting ip and the requested ip are on the
> same network:
>
> I have a linux box as eth0 208.206.76.5, and eth0:1 207.138.69.69
>
> tcpdump arp (on the 208.206.76.5 machine, while I ping from 208.206.76.1)
>
> 21:51:24.208529 eth0 B arp who-has 207.138.69.69 tell 208.206.76.1
> 21:51:24.208562 eth0 > arp reply 207.138.69.69 (0:40:5:a3:59:25) is-at 0:40:5:a3:59:25 (0:50:54:7f:63:c0)
>
>
> 208.206.76.1 does not have any interfaces in 207.138.69.x. it is a cisco
> router with an ethernet address 208.206.76.1, and a route statment:
>
> ip route 207.137.69.0 255.255.255.0 e0
>
> is it right for it to respond?
>
>
> -----------------------------------------------------
> Brian Feeny (BF304) signal@shreve.net
> 318-222-2638 x 109 http://www.shreve.net/~signal
> Network Administrator ShreveNet Inc. (ASN 11881)
>
>
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This archive was generated by hypermail 2b29 : Tue Feb 29 2000 - 21:00:16 EST