IPv6 end user addressing

Owen DeLong owen at delong.com
Fri Aug 5 17:20:45 UTC 2011

/56 is definitely preferable to /64, but, /48 really is a better choice.

/56 is very limiting for autonomous hierarchical deployments.

It's not about number of subnets. It's about the ability to provide some flexibility
in the breadth and depth of bit fields used for creating hierarchical topologies


On Aug 5, 2011, at 9:17 AM, Brian Mengel wrote:

> In reviewing IPv6 end user allocation policies, I can find little
> agreement on what prefix length is appropriate for residential end
> users.  /64 and /56 seem to be the favorite candidates, with /56 being
> slightly preferred.
> I am most curious as to why a /60 prefix is not considered when trying
> to address this problem.  It provides 16 /64 subnetworks, which seems
> like an adequate amount for an end user.
> Does anyone have opinions on the BCP for end user addressing in IPv6?

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2105 bytes
Desc: not available
URL: <http://mailman.nanog.org/pipermail/nanog/attachments/20110805/88036e49/attachment.bin>

More information about the NANOG mailing list