netdev - Re: Linux vs FreeBSD Which is correct.

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Message-ID: <CANh3MnZnyuvdiMyQTKKN=v-+y98FGbu+zA+=D4VnFL41AgRHpw@mail.gmail.com>
Date:	Wed, 17 Aug 2011 10:10:33 -0700
From:	Emil S Tantilov <emils.tantilov@...il.com>
To:	sclark46@...thlink.net
Cc:	Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: Linux vs FreeBSD Which is correct.

On Wed, Aug 17, 2011 at 10:03 AM, Stephen Clark <sclark46@...thlink.net> wrote:
> Hello List,
>
> Firstly thank you for your patience.  I am replacing a bunch of FreeBSD
> vpn/fw/routers
> with a Linux based system.
>
> I have run into a situation where if I ping our HQ the response comes back
> on a different
> interface than what the request went out on. FreeBSD is happy and says it
> got the response,
> Linux is not and gives no indication it got a response.

Try enabling ARP filtering:
echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter

Thanks,
Emil
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