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Date:	Fri, 24 Jan 2014 01:10:26 +0100
From:	Hannes Frederic Sowa <>
To:	Cong Wang <>
Cc:	David Miller <>,,
	netdev <>
Subject: Re: Setting mac address of loopback device

On Thu, Jan 23, 2014 at 04:03:29PM -0800, Cong Wang wrote:
> On Thu, Jan 23, 2014 at 3:49 PM, Hannes Frederic Sowa
> <> wrote:
> > On Thu, Jan 23, 2014 at 11:53:49AM -0800, Cong Wang wrote:
> >> BTW, how to change route to redirect _local_ traffic (that is packets
> >> sending to itself) to a non-loopback device? I tried to modify local
> >> route table, but have no luck to make it working.
> >
> > Have you seen the route_localnet sysctl? It should avoid the check for
> > loopback addresses when building outgoing route.
> I noticed it, the doc said:
> This enables the use of 127/8 for local routing purposes.
> but I don't care 127/8 traffic at all, only the traffic sending to itself
> via a non-127/8 IP. :(
> Or the doc is not accurate?

It seems accurate. Only other idea is to try netfilter with TEE target on



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