netdev - Re: [PATCH 1/3] net: Make interface aliases available for general usage

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Date:	Sun, 11 Jan 2015 23:43:48 +0100
From:	Richard Weinberger <richard@....at>
To:	Stephen Hemminger <stephen@...workplumber.org>
CC:	davem@...emloft.net, coreteam@...filter.org,
	netfilter-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, bhutchings@...arflare.com,
	john.fastabend@...il.com, herbert@...dor.apana.org.au,
	vyasevic@...hat.com, jiri@...nulli.us, vfalico@...il.com,
	therbert@...gle.com, edumazet@...gle.com, yoshfuji@...ux-ipv6.org,
	jmorris@...ei.org, kuznet@....inr.ac.ru, kadlec@...ckhole.kfki.hu,
	kaber@...sh.net, pablo@...filter.org, kay@...y.org
Subject: Re: [PATCH 1/3] net: Make interface aliases available for general
 usage

Stephen,

Am 11.01.2015 um 23:40 schrieb Stephen Hemminger:
> On Sun, 11 Jan 2015 21:52:49 +0100
> Richard Weinberger <richard@....at> wrote:
> 
>> Allow interface aliases to be used as regular interfaces.
>> Such that a command sequence like this one works:
>> $ ip l set eth0 alias internet
>> $ ip a s internet
>> $ tcpdump -n -i internet
>>
>> Signed-off-by: Richard Weinberger <richard@....at>
> 
> There is already a ifalias and it is used by SNMP.
> But the common practice is to put longer descriptive names which aren't going
> to be usable and there is no requirement that they be unique.

Actually I'm using ifalias. This patch just exposes it.

> I think you can't do this without breaking some of our users.

My idea was that udev will not set the alias if already one is used.

Thanks,
//richard

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