netdev - Re: [PATCH] ipv4: fix fib metrics

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Date:	Thu, 24 Mar 2011 23:27:01 +0100
From:	Alessandro Suardi <alessandro.suardi@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] ipv4: fix fib metrics

On Thu, Mar 24, 2011 at 11:18 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> Le jeudi 24 mars 2011 à 23:11 +0100, Alessandro Suardi a écrit :
>
>> On a -git14 kernel + both the fib metrics and the above git diff, I
>> strace'd vpnc
>>  and found out this (first triplet of public IP masked intentionally)
>>
>> [root@...f tmp]# egrep 'execve|garbage' strace.log |egrep '/ip|garbage'
>> [pid  4228] execve("/sbin/ip", ["/sbin/ip", "route", "get",
>> "xxx.9.13.212"], [/* 32 vars */]) = 0
>> [pid  4231] execve("/sbin/ip", ["/sbin/ip", "route", "replace",
>> "10.175.0.0/19", "dev", "tun0"], [/* 32 vars */]) = 0
>> [pid  4232] execve("/sbin/ip", ["/sbin/ip", "route", "flush",
>> "cache"], [/* 32 vars */]) = 0
>> [pid  4234] execve("/sbin/ip", ["/sbin/ip", "route", "get",
>> "xxx.9.13.212"], [/* 32 vars */]) = 0
>> [pid  4237] execve("/sbin/ip", ["/sbin/ip", "route", "add",
>> "xxx.9.13.212", "via", "192.168.1.1", "dev", "eth1", "src",
>> "192.168.1.8", "ipid", "0x043f", "advmss", "1400"], [/* 32 vars */]) =
>> 0
>> [pid  4237] write(2, "Error: either \"to\" is duplicate,"..., 57Error:
>> either "to" is duplicate, or "ipid" is a garbage.
>>
>> 192.168.1.1 is my DSL router and 192.168.1.8 is my computer's wireless IP.
>>
>> Does this ring any bell ?
>>
>>
>
> Not a kernel error, but a tool error ?
>
>
> (ipid is only displayed by "ip ro show")
>
> grep ipid */*.c
> ip/iproute.c:                           fprintf(fp, " ipid 0x%04x", ci->rta_id);

Don't think so. This tool has been working since I built it (29 June 2010)
 and still works in -git2 :)

--alessandro

 "There's always a siren singing you to shipwreck"

   (Radiohead, "There There")
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