netdev - Re: [RFC] ipv6: Change %pI6 format to output compacted addresses?

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Message-Id: <1250176056.28285.77.camel@Joe-Laptop.home>
Date:	Thu, 13 Aug 2009 08:07:36 -0700
From:	Joe Perches <joe@...ches.com>
To:	Jens Rosenboom <jens@...one.net>
Cc:	Brian Haley <brian.haley@...com>,
	Linux Network Developers <netdev@...r.kernel.org>
Subject: Re: [RFC] ipv6: Change %pI6 format to output compacted addresses?

On Thu, 2009-08-13 at 15:52 +0200, Jens Rosenboom wrote:
> On Thu, 2009-08-13 at 03:39 -0700, Joe Perches wrote:
> > You'll need to invent a new %p qualifier type to allow
> > compressed representation.  Your patch will change current uses
> > with seq_<foo> output in net, which could break userspace.
> 
> Would it be possible to transform this to using %pi6, as most of teh
> seq_* stuff already does?

No.

There are applications that depend on the
current output representation.

I think it should be done with something like "%pi6c" 
rather than using another %p character because there
are a limited number of single characters available.

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