From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Subject: Re: [PATCH] ipv4/ipv6: check hop limit field on input
Date: Mon, 01 Jun 2009 18:49:05 +0200
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To: Florian Westphal <fw@strlen.de>
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Le 01.06.2009 18:19, Florian Westphal a =E9crit :
> Nicolas Dichtel <nicolas.dichtel@dev.6wind.com> wrote:
>> when network stack receives a packet, it didn't check value of ttl/h=
op=20
>> limit
>> field. RFC indicates that a router must drop the packet if this fiel=
d is 0.
>=20
> Whats wrong with the checks in ip(6)_forward?
It's on forward, not on input. Router must not process it.
=46or example, if you try to ping (with ttl set to 0) the router, you w=
ill receive=20
a reply.

Nicolas