From: Bill Davidsen <davidsen@tmr.com>
To: David Miller <davem@davemloft.net>
Cc: ytht.net@gmail.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2.6.22.6 NETWORKING [IPV4]: Always use source addr in skb to reply packet
Date: Tue, 18 Sep 2007 10:43:01 -0400 [thread overview]
Message-ID: <46EFE3F5.5070201@tmr.com> (raw)
In-Reply-To: <20070917.192044.48396034.davem@davemloft.net>
David Miller wrote:
> From: lepton <ytht.net@gmail.com>
> Date: Tue, 18 Sep 2007 10:16:17 +0800
>
>> Hi,
>> In some situation, icmp_reply and ip_send_reply will send
>> out packet with the wrong source addr, the following patch
>> will fix this.
>>
>> I don't understand why we must use rt->rt_src in the current
>> code, if this is a wrong fix, please correct me.
>>
>> Signed-off-by: Lepton Wu <ytht.net@gmail.com>
>
> That the address is wrong is your opinion only :-)
Mine too, since an ICMP reply from an unexpected source IP is likely to
be logged as a probe and dropped.
>
> Source address selection is a rather complex topic, and
> here we are definitely purposefully using the source
> address selected by the routing lookup for the reply.
--
Bill Davidsen <davidsen@tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
prev parent reply other threads:[~2007-09-18 14:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 2:16 [PATCH] 2.6.22.6 NETWORKING [IPV4]: Always use source addr in skb to reply packet lepton
2007-09-18 2:20 ` David Miller
2007-09-18 2:26 ` YOSHIFUJI Hideaki / 吉藤英明
2007-09-18 2:48 ` lepton
2007-09-18 2:59 ` lepton
2007-09-18 3:14 ` david
2007-09-18 3:25 ` lepton
2007-09-18 14:43 ` Bill Davidsen [this message]
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