netdev - Re: [PATCH]: iproute2: enhance enforcement of ifconfig compatible address labels and allow non-compatible ones with -force

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Message-ID: <20150324151114.7168de0b@urahara>
Date:	Tue, 24 Mar 2015 15:11:14 -0700
From:	Stephen Hemminger <shemming@...cade.com>
To:	Joe Harvell <joe.harvell@...comms.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Vadim Kochan <vadim4j@...il.com>
Subject: Re: [PATCH]: iproute2: enhance enforcement of ifconfig compatible
 address labels and allow non-compatible ones with -force

On Sat, 21 Mar 2015 17:55:02 +0000
Joe Harvell <joe.harvell@...comms.com> wrote:

> The ip addr command today rejects address labels that would break 
> ifconfig.  However, it allows some labels which still break it. Enhance 
> enforcement to reject all known incompatible labels, and allow the 
> existing -force option to allow someone to use a label even if it is not 
> ifconfig compatible
> 
> Make existing -force option of ip addr add skip enforcment of ifconfig 
> compatible address labels.
> Change enforcement to properly reject labels that do begin with 
> <devname> but are followed by a string that does not begin with colon.
> 
> 
> The following changes since commit 4612d04d6b8f07274bd5d0688f717ccc189499ad:
> 
>    tc class: Show class names from file (2015-03-15 12:27:40 -0700)
> 
> are available in the git repository at:
> 
>    git@...hub.com:jharvell/iproute2.git addr-label-noncompat
> 
> for you to fetch changes up to 6a1d09e93ae1fb4f7f1cd5981813af918e8efc88:

Not really enthusiastic about this. It seems to introduce more issues
and I don't consider it a big issue. If user is creating labels with
ip and it breaks ifconfig, it is really a case of shooting themselves
in the foot; or the fact that ifconfig needs to die (or get fixed).
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