Joel jaeggli wrote:
>> First of all, ND use is optional and, if ND is used, RA
>> must be used.
>>
>> It means that, if RA is not used, ND can't be used.
>
> Finding and maintaining the l2 address for a device on a subnet where RA
> is not used is a pretty common activity so I'm not sure how your would
> conclude that. 2461/4861/5942 certainly don't preclude that.
RFC6434 has contradictory statements:
Neighbor Discovery SHOULD be supported.
and
Hosts MUST support IPv6 Stateless Address Autoconfiguration as
defined in [RFC4862].
and a reasonable interpretation is SLAAC MUST be supported if
ND is supported.
Or, we shouldn't expect IPv6 specifications reasonable,
which means reasonable operation is impossible.
Masataka Ohta
