IPv6 prefixes longer then /64: are they possible in DOCSIS networks?

Tue Nov 29 16:46:49 UTC 2011

In a message written on Tue, Nov 29, 2011 at 11:39:06AM -0500, Ray Soucy wrote:
> We run both systems, in production, using DHCPv6 on prefixes much
> smaller than 64-bit (typically 120 or 119; we mirror whatever the IPv4
> prefix length is).

Can you explain a bit more about how this works?  My understanding
of the current DHCPv6 implementations is that they had a hard
assumption of a /64 prefix and the ability to do SLAAC and hear a
valid RA in order to do DHCPv6.  Are you doing anything special to
make this happen with smaller subnets?

-- 
       Leo Bicknell - bicknell at ufp.org - CCIE 3440
        PGP keys at http://www.ufp.org/~bicknell/
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