RE: ipv6 eui-64 address

From: Duncan Maccubbin (duncan.maccubbin@earthlink.net)
Date: Fri Oct 12 2007 - 17:31:48 ART

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Real world FYI...site local addresses have been deprecated.

http://www.6net.org/publications/standards/draft-ietf-ipv6-deprecate-site-local-00.txt

-----Original Message-----
>From: Shine Joseph <shinepjoseph@iprimus.com.au>
>Sent: Oct 12, 2007 3:58 PM
>To: 'John' <jgarrison1@austin.rr.com>, ccielab@groupstudy.com
>Subject: RE: ipv6 eui-64 address
>
>John,
>
>The site local address starts with fec0::/10. So, if your last 64 bits is
>derived from mac address or not, does it really matter for the site-local
>address, as the defining factor is the first 10 bits.
>
>See the following link:
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/ipv6
>_c/v6addres.htm#wp1038797
>
>HTH,
>Shine
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of John
>Sent: Saturday, 13 October 2007 3:28 AM
>To: ccielab@groupstudy.com
>Subject: re:ipv6 eui-64 address
>
>OK I see my mistake, but that leads to another question. For this example
>I'm
>supposed to be configuring a site-local address. Inverting the u bit gives
>it
>a value of 0, which makes it global. Now I'm really confused
>
>
>
>I'm wondering if this might be due to dynamips. I have f0/0 with a MAC
>address of c200.0848.0000. That yeilds a eui-64 address of C000:8FF:FE48:0.
>My understanding is that I should get an eui address of C200:8FF:FE48:0. not
>C000:8FF:FE48:0 What happened to the 2. It shouldn't be the U bit because
>that would change the value of C. Also any resources for IPv6 besides the
>RFC's that you know of would be helpful
>
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