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Date: Thu, 19 Apr 2001 01:12:52 +0300 (EEST)
From: Sampsa Ranta <sampsa@netsonic.fi>
To: Julian Anastasov <ja@ssi.bg>
cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Broken ARP (was Re: ARP responses broken!)
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Message-ID: <Pine.LNX.4.33.0104190110320.27239-100000@nalle.netsonic.fi>
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On Wed, 18 Apr 2001, Julian Anastasov wrote:

>
> 	Hello,
>
> Sampsa Ranta wrote:
>
> > The code I used to do the trick at my network was as simple as this,
> > in function arp_rcv, the problem is ip_dev_find that does know if there
> > are other devices with same IP address.
>
> 	I don't think this is your problem. You patch is not correct.
> In fact, you implement the same function as in "hidden" but you are
> missing some things. Please, read the "hidden" flag description in
> the kernel docs. You must solve the case where your ARP probes are sent
> always through one device due to your routing (this is out traffic,
> yes?). These probes soon or later will cause you problems because
> they change the entry in the remote hosts' ARP tables. You so carefully
> tried to advertise the address on specific interface and now the other
> hosts again talk to one card only.
>
> 	who-has 194.29.192.1 tell 194.29.192.38
>
> 	and your are dead :)
>
> 	So, please try "hidden" before going into more problems with
> these patches (I see two in this thread, and I saw so many before).

The problem is there is no hidden in 2.4 and my patch did not modify
behavior of sending ARP requests and receiving the replies, are there
issues to be solved in these cases, too?

 - Sampsa Ranta
   sampsa@netsonic.fi

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