Re: Linux ARP

From: Brian (signal@shreve.net)
Date: Sun Feb 27 2000 - 00:10:03 EST


On Sun, 27 Feb 2000, Gregory Maxwell wrote:

>
> 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.

Do you know the RFC's number?

>
>
>
> 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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> > Please read the FAQ at http://www.tux.org/lkml/
> >
>

-----------------------------------------------------
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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