Re: [DNA-BOF] Potential Workplan for comment

[Bernard Aboba <aboba@internaut.com>]

> In the case where the default router is still
> contactable, Neighbor Solicitation could be used
> to check the reachability of the router.
> I think that your v4 Movement Detection draft
> undertakes similar operation with ARP.

Yes. In IPv4 IRDP may or may not be available, so a Router Solicitation
might not be answered. That means that a change to a new router may not be
detectable without DHCPv4.  However, a change to a previously encountered
router is detectable via ARP.

> There are complicating factors regarding the
> uniqueness of the router's address, but in
> most cases, it should be possible to detect a
> change of router without DHC operation.

Do you mean the router's IP address uniqueness?  The solution to that is
to also check the router's MAC address, no?