Re: draft-ietf-udlr-lltunnel-03.txt - Two questions.

[Emmanuel Duros <Emmanuel.Duros@sophia.inria.fr>]

Dr G Fairhurst wrote:
> 
> I have two queries on draft-ietf-udlr-lltunnel-03.txt.
> 
> ------------
> 3. Topology
> 
> Why ***MUST*** an End System with a receive-only interface behave as a
> router?
> Is there a reason why a simple client can not simply implement lltunnel
> without
> having to activate specific router code?
>

No there is not. lltm is a very generic mechanism, all sort of topologies
and configurations are supported. It has been designed to work if the 
receiver is a router or a host. We had kept the sentence "A receiver MUST
be a router" for historical reasons. It is removed in the newest version 
of the document and the receiver definition is:
 
Receiver: A router or a host that has receive-only connectivity to a UDL.

Emmanuel