netdev - Re: IPv6 Anycast?

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Message-ID: <20100726084418.GA14903@verge.net.au>
Date:	Mon, 26 Jul 2010 17:44:21 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Stuart Sheldon <stu@...usa.net>
Cc:	Ulrich Weber <uweber@...aro.com>,
	Mikael Abrahamsson <swmike@....pp.se>, netdev@...r.kernel.org
Subject: Re: IPv6 Anycast?

On Fri, Jul 23, 2010 at 09:54:05AM -0700, Stuart Sheldon wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
> 
> Hi Ulrich,
> 
> Thanks, that resolves half the issue. So as of right now, there is no
> userspace program to add anycast addresses?

I was hoping to have some useful information, but alas I failed on that count.

Looking at ip(8) it seems that the following ought to work:

ip addr add fd16:a2f5:c4d7::7/48 anycast fd16:a2f5:c4d7::8 dev eth0

However, it seems not to, and then I found this in the manpage :-(

	anycast   -   not  implemented  the  destinations are  anycast
	addresses assigned to this host.  They are mainly equivalent to
	local with one difference: such addresses are invalid when used as
	the source address of any packet.

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