RE: ISATAP interface ... if PRL is empty disable interface?

["John Spence" <jspence@native6.com>]

Fair enough.  Thanks for the response Tim.

Spence 

> -----Original Message-----
> From: Tim Gleeson (tgleeson) [mailto:tgleeson@cisco.com] 
> Sent: Tuesday, September 27, 2005 9:06 PM
> To: John Spence; v6ops@ops.ietf.org
> Subject: RE: ISATAP interface ... if PRL is empty disable
interface?
> 
> John,
> 
> The SHOULD NOT is there to discourage use of ISATAP on the 
> Internet when the PRL is empty. However, since it is a SHOULD 
> NOT, within a site one can configure ISATAP to be used anyway.
> 
> Tim
> 
> > -----Original Message-----
> > From: owner-v6ops@ops.ietf.org
> > [mailto:owner-v6ops@ops.ietf.org] On Behalf Of John Spence
> > Sent: Monday, September 26, 2005 11:17 PM
> > To: v6ops@ops.ietf.org
> > Subject: ISATAP interface ... if PRL is empty disable
interface?
> > 
> > 
> > v24 of the ISATAP spec, 8.3.2, says that:
> > 
> > "After initializing an ISATAP interface's PRL, if the PRL 
> is empty the 
> > node SHOULD disable the interface."
> > 
> > Just because there is no default router, ISATAP client nodes
can 
> > exchange traffic using their link-local addresses on the
virtual 
> > ISATAP link.  That would be consistent with native nodes -
just 
> > because they have no router, and no way off the link, they
still 
> > configure link-local addresses and stand ready to talk to 
> other nodes 
> > that are on-link - they do not disable the interface.
> > 
> > Is there something else in the Spec I missed that allows
nodes to 
> > communicate using link-local addresses in the absence of an
ISATAP 
> > router?