Re: [DNA-BOF] Draft BoF agenda.

[Bernard Aboba <aboba@internaut.com>]

> It would make sense to check the address against the "addrconf" prefixes
> (those that have the A bit set) if it was allocated by stateless address
> autoconfig, and check with the DHCP server if it was allocated by DHCP.

I do not think it is necessary to check with the DHCP server if it is
possible to demonstrate reachability to the primary default gateway
corresponding to a still valid lease.

> I haven't thought about hints that would indicate that it is more or less
> likely to be on a new link; a separate "link identifier" advertised in RAs
> would certainly do the job but perhaps there are some heuristic hints
> that can be applied in the absense of such information.

There are a number of hints that might fall in this category.  For
example, while retaining the same 802.11 SSID is a necessary but not
sufficient condition for remaining on the same link, changing SSIDs typically
implies a change of link.  With "device discovery" protocols (e.g. CDP,
LLDP, DDP) growing in popularity, hints are increasingly available and can
be used to good effect.