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From: Marek Lindner <lindner_marek@yahoo.de>
Date: Fri, 12 Aug 2011 19:22:28 +0200
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Subject: Re: [B.A.T.M.A.N.] Multiple DHCP Gateways
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To: The list for a Better Approach To Mobile Ad-hoc Networking <b.a.t.m.a.n@lists.open-mesh.org>

On Friday, August 12, 2011 18:02:20 Antonio Quartulli wrote:
> In your topology you have three nodes: A, B and C. A and C are GWs. A is
> the current best GW for B and B got an IP from the DHCP server running on
> A. Then the link A <--> B becomes worse than B <--> C. At this point
> Batman-adv will drop a DHCP unicast renewal request directed to A
> 
> if and only if TQ(C) - TQ(A) > 50

Be aware that only happens if you use the git repository. The "DHCP request 
drop" feature was not released yet.

What version are you using ?

Cheers,
Marek