Does radvd also needs to be used?

[Michael Sinatra]

On 11/3/10 3:21 PM, Eddie Lania wrote:
> Hello,
>
> A small question:
>
> If i run a dhcpv6 server on a small, not segmented, lan. Do i also need
> to use radvd?
>
> I think i do because dhcpv6 server does not seem to have an option to
> provide a default gateway to the clients, is this correct?

Such an option does not (yet?) exist in the world of DHCPv6.  You will 
need to provide RAs (e.g. via radvd) to the net so that clients can get 
their default routes.

Also, unless you wish for the clients to get SLAAC addresses in addition 
to DHCPv6 addresses, you need to unset the 'autoconfig' flag on the RAs, 
even if you set the 'managed-config flag'.  The RFC used to be very 
clear that these two flags are independent, and OSes like Windows 
{Vista,7} and Solaris 10 will do both SLAAC and DHCPv6 if both flags are 
set.

For a "Brand C" router providing IPv6 connectivity, this is done with 
the following interface command:

ipv6 nd prefix xxxx:xxxx:xxxx:xxxx::/xx no-autoconfig

michael