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Re: I-D Action:draft-ietf-v6ops-ipv6-cpe-router-03.txt



Hi,

On Fri, Jan 08, 2010 at 01:24:00PM +0100, Ole Troan wrote:
> >> would you be happier with the following text?
> >> 
> >>   WLL-1:  If the WAN interface supports Ethernet encapsulation, then
> >>           the IPv6 CE router MUST support IPv6 over Ethernet [RFC2464].
> >> 
> >>   WLL-2:  If the WAN interface supports PPP encapsulation:
> >> 
> >>           (a)  The IPv6 CE router MUST support IPv6 over PPP [RFC5072]
> >>                and PPPoE [RFC2516].
> >> 
> >>           (b)  In a dual-stack environment with IPCP and IPV6CP running
> >>                over one PPP logical channel, the NCPs MUST be treated
> >>                as independent of each other and start and terminate
> >>                independently.
> > 
> > I'm a bit confused about "MUST support ... PPPoE".  What if the interface
> > does PPP, but not "Ethernet" underneath?  As in (gasp) PPP-over-ISDN?
> 
> good point. can you propose some text?

Bah...  but let me try.  I'm not completely sure what we *are* trying to
say, especially given "Ethernet" vs. "PPPoE".  But let's try (also
taking MarcoH's point into account):


  WLL-1:  If the WAN interface supports non-PPPoE Ethernet encapsulation, 
          then the IPv6 CE router MUST support IPv6 over Ethernet [RFC2464].

  WLL-2:  If the WAN interface supports PPP encapsulation:

          (a)  The IPv6 CE router MUST support IPv6 over PPP [RFC5072].

          (b)  In a dual-stack environment with IPCP and IPV6CP running
               over one PPP logical channel, the NCPs MUST be treated
               as independent of each other and start and terminate
               independently.  It SHOULD be configurable to restart the
               whole PPP session in the case of one NCP consistently 
               failing to come up.


Gert Doering
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