Re: new draft on IPv6 CPE router available for review

[Shin Miyakawa <miyakawa@nttv6.jp>]

Mikael,

Let us forget about how Microsoft is doing :-)

> > I use that Vista is just as one example. The Strong Host Model is 
> > defined in RFC1122 or STD3. That's a standard.
> 
> But if it's a router (which I think is what is needed for a IPv6 CPE) then 
> it should be able to act as one, and use loopback interfaces to source 
> traffic.

Even in this case, some software which is going to send a packet to the network
from CPE, according to RFC3484 "Default Address Selection for IPv6",
there is a certain reason why the WAN I/F's IP address should be used as
its source address like follows.

   ---------------- from RFC3484 ----------------
   It is RECOMMENDED that the candidate source addresses be the set of
   unicast addresses assigned to the interface that will be used to send
   to the destination.  (The "outgoing" interface.)  On routers, the
   candidate set MAY include unicast addresses assigned to any interface
   that forwards packets, subject to the restrictions described below.

      Discussion:  The Neighbor Discovery Redirect mechanism [14]
      requires that routers verify that the source address of a packet
      identifies a neighbor before generating a Redirect, so it is
      advantageous for hosts to choose source addresses assigned to the
      outgoing interface.  Implementations that wish to support the use
      of global source addresses assigned to a loopback interface should
      behave as if the loopback interface originates and forwards the
      packet.
   ---------------- from RFC3484 ----------------

Best wishes,

Shin Miyakawa