RE: CPE router learning DNS servers - comment on draft-ietf-v6ops-ipv6-cpe-router-03

["STARK, BARBARA H (ATTLABS)" <bs7652@att.com>]

The L-6 requirement is a LAN-side (DHCPv6 Server) requirement. However,
since SLAAC is the expected method for address config in the LAN, and
support for DHCPv6 DNS_SERVERS option is a MUST (and other options is a
SHOULD), I think that the MAY statement for stateless DHCPv6 support
might not be completely consistent.

As for the WAN-side (DHCPv6 client), there's currently no mention of
stateless DHCPv6. It does seem implied by other requirements that
describe support for SLAAC + the ability to get other config info via
DHCPv6. It might be good to be more explicit on this.
Barbara

> -----Original Message-----
> From: Dan Wing [mailto:dwing@cisco.com]
...
> and I see that draft-ietf-v6ops-ipv6-cpe-router-03 only says:
> 
>    L-6:   The IPv6 CE router MUST support a DHCP server [RFC3315] on
> its
>           LAN interfaces.  It MAY support Stateless Dynamic Host
>                               ^^^
>           Configuration Protocol (DHCP) Service for IPv6 [RFC3736].
> 
> 
> Why is that only a MAY?  I mean, without the CE doing DHCPv6 towards
> the Service Provider's network, is there some other way the CE router
> learns the IPv6 network's DNS servers so it can propagate those
> DNS servers to hosts connecting to the CE router?  (I hope the answer
> is not 'manual configuration').
> 
> -d


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