netdev - Re: iproute, batch-cmds, and mac-vlans.

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Message-ID: <20100712221958.2a87b0e3@nehalam>
Date:	Mon, 12 Jul 2010 22:19:58 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	NetDev <netdev@...r.kernel.org>
Subject: Re: iproute, batch-cmds, and mac-vlans.

On Mon, 12 Jul 2010 21:49:20 -0700
Ben Greear <greearb@...delatech.com> wrote:

> After too much time debugging, I finally realized that the ip
> tool was truncating my command because the mac-vlan device name
> had a '#' in it.
> 
> ]# cat /tmp/foo.txt
> ru add to 10.99.21.1 iif eth0#0 lookup local pref 11
> 
> 
> # IP tool has some hacked up debugging code
> ]# ip -batch /tmp/foo.txt
>   argc: 4
>   arg -:to:-
>   arg -:iif:-
> WARNING:  Using TABLE_MAIN in iprule_modify, table_ok: 0  cmd: 32
> 
> 
> So, it acts on eth0 instead of eth0#0, and silently ignores the 'lookup local pref 11'.
> 
> I understand that it is trying to parse # as comments, but would you
> all be interested in a patch that allowed ignoring '#' except
> when it is the first non-whitespace character on a line, and maybe
> when preceded by whitespace?  This would of course have the possibility
> of breaking someone's script somewhere, so it could be enabled with
> a new command line arg, perhaps.

Putting # in device name just sounds like a bad idea.
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