From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
To: Florian Westphal <fw@strlen.de>
Cc: netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH] ipv4/ipv6: check hop limit field on input
Date: Mon, 01 Jun 2009 18:49:05 +0200 [thread overview]
Message-ID: <4A240681.2010300@6wind.com> (raw)
In-Reply-To: <20090601161917.GA29745@Chamillionaire.breakpoint.cc>
Le 01.06.2009 18:19, Florian Westphal a écrit :
> Nicolas Dichtel <nicolas.dichtel@dev.6wind.com> wrote:
>> when network stack receives a packet, it didn't check value of ttl/hop
>> limit
>> field. RFC indicates that a router must drop the packet if this field is 0.
>
> Whats wrong with the checks in ip(6)_forward?
It's on forward, not on input. Router must not process it.
For example, if you try to ping (with ttl set to 0) the router, you will receive
a reply.
Nicolas
next prev parent reply other threads:[~2009-06-01 16:49 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-01 15:13 [PATCH] ipv4/ipv6: check hop limit field on input Nicolas Dichtel
2009-06-01 16:19 ` Florian Westphal
2009-06-01 16:49 ` Nicolas Dichtel [this message]
2009-06-01 17:13 ` Florian Westphal
2009-06-02 9:30 ` Nicolas Dichtel
2009-06-01 18:43 ` Eric Dumazet
2009-06-01 18:55 ` Brian Haley
2009-06-02 1:54 ` John Dykstra
2009-06-02 2:02 ` David Miller
2009-06-02 9:22 ` John Dykstra
2009-06-02 9:32 ` David Miller
2009-06-02 9:35 ` Nicolas Dichtel
2009-06-02 9:30 ` Nicolas Dichtel
2009-06-02 9:30 ` Nicolas Dichtel
2009-06-02 2:04 ` David Miller
2009-06-02 5:31 ` Eric Dumazet
2009-06-02 5:43 ` David Miller
2009-06-02 9:36 ` Nicolas Dichtel
2009-06-02 9:37 ` David Miller
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