RE: Fw: Welcome to the InterNAT...

[Pekka Savola <[e-mail]>]

On Thu, 27 Mar 2003, Tony Hain wrote:
> Pekka Savola wrote:
> > Who said the addresses are *completely* revokated when the network 
> > connectivity is intermittent?
> > 
> > More likely than not, those address advertisements have a 
> > lifetime longer than the duration of the downtime (both 
> > preferred and valid in RFC2461
> > terms!) -- and whoops, everything works like a charm still!
> 
> You continue to ignore the fact that when the connection to the public
> network reestablishes with a different prefix, all existing internal
> connections will be dropped.  [...]

Not so.  (If you build your system in an optimal fashion -- which really 
does need a bit fleshing out, though.)

Such prefixes would then reach valid lifetime=x, preferred lifetime=0, be
set "deprecated" and not be used for new connections anymore.  Nothing
requires connections be killed using such deprecated addresses.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings