netdev - RE: SO_BINDTODEVICE inconsistency between IPv4 and IPv6

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Message-ID: <988B94264D669747BBD6A7EF86DE1C84155DDFEC67@hasmsx504.ger.corp.intel.com>
Date:	Tue, 7 Jun 2011 15:55:29 +0300
From:	"Yuniverg, Michael" <michael.yuniverg@...el.com>
To:	David Woodhouse <dwmw2@...radead.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:	"Yedvab, Nadav" <nadav.yedvab@...el.com>
Subject: RE: SO_BINDTODEVICE inconsistency between IPv4 and IPv6

Hi David, all

I went  as far as to see that different Kernel code is responsible for IPv4 and IPv6 implementation.
We closed the issue in current version as a limitation, but of course we would be happy to get rid of that.
Probably it would be a bit easier to get support in  the next version, since we are going to base on another Linux flavor, which is based on latest Kernel.

Michael

> -----Original Message-----
> From: David Woodhouse [mailto:dwmw2@...radead.org]
> Sent: Saturday, May 28, 2011 2:08 AM
> To: netdev@...r.kernel.org
> Cc: Yuniverg, Michael; Yedvab, Nadav
> Subject: Re: SO_BINDTODEVICE inconsistency between IPv4 and IPv6
> 
> On Thu, 2011-03-17 at 10:29 +0000, David Woodhouse wrote:
> > We've discovered strange behaviour when we listen on in6addr_any and
> > use SO_BINDTODEVICE to bind to the lo device.
> >
> > We can connect to any IPv4 address that is local to the machine, on
> > any interface. (This is true whether we listen on AF_INET6/in6addr_any
> > and accept IPv4 connections on the IPv6 socket, or whether we just
> > listen on AF_INET/INADDR_ANY).
> >
> > The IPv6 behaviour is different — the only IPv6 address that we can
> > connect to is ::1.
> 
> Michael, Nadav ― did you ever get any further with this?
> 
> --
> dwmw2


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