There is a difference between allowing protocol to be used
in a "local" only mode (single label) and a "global" mode
(multi-label) and saying you must support single label in
a global context.
If a protocol is used in a global mode, the problem with trying to use it in a
tailored, local mode is that the various defaults of the local context are not
carried with the data that escapes into the global context.
There must be perfect gatewaying between the two contexts and this almost never
achieved.
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net
_______________________________________________
Ietf mailing list
Ietf(_at_)ietf(_dot_)org
https://www.ietf.org/mailman/listinfo/ietf