[c-nsp] 3650G Port security and multicast.

[A.L.M.Buxey at lboro.ac.uk]

Hi,

> Neighbour discovery ("the thing that replaces ARP") and router advertisement /
> router discovery all use multicast.
> 
> There is no broadcast in IPv6 anymore, it has been completely replaced by
> job specific multicast groups.

many thanks for the explanation - I'll now have to have a look at 
some nets that I've got which dont have multicast enabled but
are happily doing IPv6 - i'm slightly confused!  :-)

alan