netdev - [NET] Can not send icmp netunreach packet

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Message-ID: <47C27C14.4010208@cn.fujitsu.com>
Date:	Mon, 25 Feb 2008 16:28:04 +0800
From:	Li Yewang <lyw@...fujitsu.com>
To:	swhiteho@...hat.com
CC:	netdev@...r.kernel.org
Subject: [NET] Can not send icmp netunreach packet

Hi Steven
 
    There is a bug about icmp netunreach.
    If the kernel does not find a route for a packet, it must send a 
icmp netunreach packet
    to the source host, and  discard  the packet.
    But the latest kernel  does not send a icmp netunreach packet 
because of the  fib_lookup
    return value  of -ESRCH when a route  is not found.

    I found a your patch about why 
changes the "not found" error return for the
    lookup function to -ESRCH. But I think this is not correct.
  
    Your patch is as following:      
   
http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commitdiff;h=83886b6b636173b206f475929e58fac75c6f2446

     
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