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Date: Tue, 5 Jan 2010 07:31:46 +0100
From: Andrew Lunn <andrew@lunn.ch>
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Subject: Re: [B.A.T.M.A.N.] batman-adv gateway support
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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.net>

> * The third patch checks whether locally received packets are DHCP
> queries and forwards them via uncicast to the best gateway instead
> of broadcasting them.

Can this be made a bit more robust? An easy DoS would be to offer to
be a gateway, but not run DHCP. All my near neighbours then fail to
get an IP address and i have quiet network with more bandwidth for
myself.

Could we inspect the DHCP packet a bit more deeply, look for DHCP
discovery packets, unicast 3 in 4 to the best gateway, broadcast 1 in
4 as a fallback.

  Andrew