netdev - Re: Help On function to get IPV6 address of an interface in kernel

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Message-ID: <20100307095302.634fd08f@opy.nosense.org>
Date:	Sun, 7 Mar 2010 09:53:02 +1030
From:	Mark Smith <lk-netdev@...netdev.nosense.org>
To:	Venkata Mohan Reddy <mohanreddykv@...il.com>
Cc:	Brian Haley <brian.haley@...com>, netdev@...r.kernel.org
Subject: Re: Help On function to get IPV6 address of an interface in kernel

On Fri, 5 Mar 2010 21:19:34 +0530
Venkata Mohan Reddy <mohanreddykv@...il.com> wrote:

> Thanks a lot Brain. ipv6_get_lladdr()  helped me. Actually I want to get site-local or univeral(global) address. Though there is no direct function to get theseaddresses, ipv6_get_lladdr() shows how we can get the other addresses too.
> 

Site-locals are deprecated (http://www.rfc-editor.org/rfc/rfc3879.txt),
so I wouldn't think you'll ever find a site-local specific address
function. If you do find one, I'd be fairly sure it'd go away.

> Thanks,
> Mohan Reddy
>   
> On Thu, Mar 04, 2010 at 11:17:39AM -0500, Brian Haley wrote:
> > Mohan Reddy wrote:
> > > Hi,
> > > 
> > > Is there a function or a way in kernel to get an interface ipv6 address if interface name or net_device object is known? I searched in the kernel i got a function ipv6_get_ifaddr(). But it is expecting an ipv6 address as a parameter. 
> > 
> > What type of IPv6 address?  For link-locals you can use ipv6_get_lladdr(), but
> > for others ipv6_dev_get_saddr() is more comprehensive, but you'll need a
> > destination address.  There's lots of reference code in addrconf.c to do
> > other things.
> > 
> > -Brian
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