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Re: IPv6 RA vs DHCPv6 - The chosen one?
From: Masataka Ohta <mohta () necom830 hpcl titech ac jp>
Date: Sat, 24 Dec 2011 17:58:32 +0900

Michael Sinatra wrote:

DHCPv6 works over link layers with unreliable multicast
better than ND.

You still need ND to provide the link-layer address resolution (i.e. the
IPv6 equivalent of ARP), even with DHCPv6.

Not necessarily. You can use ARP and DHCPv6 and you don't have
to waste time and power for DAD.

Moreover, how do you come to
the conclusion that DHCPv6, which uses multicast for the solicitation,
is more reliable over links where multicast is unreliable?

DHCPv6 (and ARP) uses a lot less multicast/broadcast than ND.

FYI, I have been using SLAAC over 802.11 for many years, and have
supported large 802.11 installations with SLAAC and have never had a
problem related to "unreliable multicast" on that medium. Other
problems, yes.  But not that one.

That's because your 802.11 is not congested.

                                                Masataka Ohta


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