[c-nsp] RIPE 554, availability of required IPv6 features

[Peter Rathlev]

Thank you all for the input. It seems the general consensus here is that
we should put pressure on the vendors to actually implement these things
even if they're not available right now. And if we end up modifying the
RFP to make the basic IPv6 support optional we have hopefully at least
sent a signal. And RA guard and ND inspection would be mandatory no
matter what.

-- 
Peter