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Message-ID: <20111128153002.GB589422@jupiter.n2.diac24.net>
Date: Mon, 28 Nov 2011 16:30:02 +0100
From: David Lamparter <equinox@...c24.net>
To: Greg Scott <GregScott@...rasupport.com>
Cc: David Lamparter <equinox@...c24.net>, netdev@...r.kernel.org
Subject: Re: ebtables on a stick
On Mon, Nov 28, 2011 at 08:54:09AM -0600, Greg Scott wrote:
> > This doesn't answer your question, but your use case is better solved
> > with proxy arp.
>
> ...But maybe there's a way to make my NIC only answer ARPs for certain IP Addresses I care about? That would nicely solve the problem. If it works.
"ip neigh add proxy 1.2.3.4 dev eth0". Please look at the example i gave
you.
> In my earlier near-disaster, I did this:
>
> echo 1 > /proc/sys/net/ipv4/conf/${INET_IFACE}/proxy_arp
NO. You do not touch this switch. Be afraid of this switch.
The instructions i gave you are complete. This switch is not involved.
> to turn on proxy arp. I wonder if that ip neighbor stuff does it selectively?
We already had this discussion in July.
"ip neigh add proxy" is independent of /proc/.../proxy_arp.
-David
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