netdev - Re: [PATCH/RFC] Adding IP(v6) address with scope link creates global address

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Date:	Mon, 07 Dec 2009 20:30:05 +0100
From:	Andreas Henriksson <andreas@...al.se>
To:	Brian Haley <brian.haley@...com>
Cc:	netdev@...r.kernel.org,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Jedasothi <sotheme@...iuu.mine.nu>,
	Bug 487745 <487745@...s.launchpad.net>
Subject: Re: [PATCH/RFC] Adding IP(v6) address with scope link creates
 global address

Adding submitter and launchpad bug to CC.

On mån, 2009-12-07 at 12:18 -0500, Brian Haley wrote:
> Hi Andreas,
> 
> Andreas Henriksson wrote:
> > Hello again!
> > 
> > Replying to myself (see http://www.spinics.net/lists/netdev/msg113943.html)
> > and attaching an untested patch to see if this sparks more interest.
> > 
> > On Wed, Nov 25, 2009 at 02:59:45PM +0100, Andreas Henriksson wrote:
> >> "Jedasothi" reported problems setting scope with iproute on newly added
> >> ipv6 addresses in:
> >> https://bugs.launchpad.net/ubuntu/+source/iproute/+bug/487745
> >>
> >>> To reproduce bug run
> >>> ip addr add '::4/64' scope link dev eth0
> >>>
> >>> This results in a line seen with
> >>> ip addr show eth0
> >>> inet6 ::4/64 scope global tentative
> >>>
> >>> The label "global" is seen instead of "link".
> > 
> > I'd appreciate if someone could review and test this:
> 
> I tried the patch quickly since I was curious why this is a problem, but
> it didn't work exactly right.  I could post an update, but I'm not sure
> this is the right thing to do - ::4 isn't a link-local address, and other
> parts of the network stack (and other systems) aren't going to treat it as
> such.
> 
> Maybe the submitter can explain exactly how this is breaking something?
> 
> Thanks,
> 
> -Brian

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