Re: [DNA-BOF] Detecting Network Attachment BoF description (rev 2)

[Alper Yegin <alper@docomolabs-usa.com>]

> I see mobility/movement as basically disconnection from one
> subnet and connection to another.

I think we need to differentiate between link/subnet/prefix changes.

For example, host might change its access point (L2 bridge) but it may stay
connected to the same access router. In this case, there is no change
required in the IP state.

Or, host might change its access point and consequently access router, but
the two routers might be advertising the same prefix. In that case, IP
address of the host does not change, but default router information must
change. So, even if the subnet does not change, host has to react to this.

Or, the link, default router and prefix change at the same time.

On the other hand, the link might not change (i.e., host is still connected
to the same media), but the configuration parameters change. For example
router renumbering. Now host has to react to this too.

Alper