Cogent IPv6

sthaug at sthaug at
Thu Jun 9 12:19:45 UTC 2011

> > You can actually use DHCPv6 to assign addresses to hosts dynamically
> > on longer than /64 networks.
> > 
> > However, you may have to go to some effort to add DHCPv6 support to
> > those hosts first.
> Also, there is no prefix-length (or default router) option in DHCPv6,
> so you have to configure the Router Advertisements with the longer
> prefix length in this case.

It is perfectly possible to use RA *only* for the default router, and
not announce any prefix at all. This implies a link-local next hop.

Steinar Haug, Nethelp consulting, sthaug at

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