RE: v6 deployment in general [Re: tunnel broker deployment [RE: Tunneling scenarios and mechanisms evaluation]]

["Christian Huitema" <huitema@windows.microsoft.com>]

> > In practice the NAT mappings do not change and the Teredo address
> > remains reasonably stable.
> 
> unless the global IPv4 address of the NAT box is changed every 24
hours
> by the ISP...

The Teredo code will detect that change, and inform the applications on
the box that the local IP addresses have changed. This is supposed to
trigger whatever update is necessary in the application, e.g., a dynamic
DNS update. 

Note that the ISP who go to the trouble of renumbering their
subscribers' IPv4 address every 24 hours are very likely to renumber the
IPv6 prefix every 24 hours, for the same reason. 

-- Christian Huitema