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From: Ingo Oeser <netdev@axxeo.de>
To: Anand Kumria <wildfire@progsoc.uts.edu.au>
Cc: netdev@vger.kernel.org
Subject: Re: link-local address via ifconfig
Date: Mon, 12 Jun 2006 16:02:07 +0200	[thread overview]
Message-ID: <200606121602.08048.netdev@axxeo.de> (raw)
In-Reply-To: <20060603025743.GL549@progsoc.uts.edu.au>

Hi Anand,

Anand Kumria wrote:
> There are plenty of people who still use ifconfig to list the addresses
> assigned to their network interfaces (I know, ifconfig is broken) and
> who then parse the output.
> 
> However the kernel puts link-local scoped address first if the address
> list of an interface, so an interface like:

> Is there any reason to put the link-local address first in the list?
> 
> I've had a number of bugreports (or outright panic attacks) where the 
> problem turned out to be that ifconfig was reporting the link-local 
> address first, rather than the global/site one.

This can be worked around by defining an "alias interface" this way
"ip address add 169.254.182.108/16 brd 169.254.255.255 scope link dev eth0 label eth0:0"
(see: "label eth0:0" is appended)

So in reality this is no problem for users.


Regards

Ingo Oeser

      parent reply	other threads:[~2006-06-12 14:02 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-06-03  2:57 link-local address via ifconfig Anand Kumria
2006-06-03  4:55 ` Herbert Xu
2006-06-12 14:02 ` Ingo Oeser [this message]

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