Re: LL70: Use of the term "valid"

> Bernard is right - the DNAv4 reachability test is only a rough guide to the appropriateness
> of an address configuration. It can even give a false positive - e.g.
> when I have the address 10.x.y.z configured, I can move to another
> network where the 10/8 range is in use and where the reachability test
> is passed yet my address is not at all appropriate and may actually conlict.

The reachability test includes determination that the MAC address of the
gateway is unchanged, so I think that case is covered.