Re: [Mip6] Re: RFC2136 and IP address ownership

[Francis Dupont <Francis.Dupont@enst-bretagne.fr>]

Note you talk about the IP address ownership for updates in the reverse
tree when the issue in the MIP6 WG context is about updates in the
direct tree, i.e., the address is the RDATA and not the NAME.

To come back to IPv6 and dynamic DNS update, DHCPv6 is not commonly
used for the address management because the stateless autoconfig
(RFC 2462) is far simpler. The problem is without a DHCPv6 server
all nodes have to update the reverse tree themselves and they are
not authorized to do it.

A possible solution is to use CGAs (RFC 3972) which provide a nice
proof of ownership on the interface ID (low 64 bits of addresses).
IMHO this should be better than to rely on some kind of return
routability check. The crypto part (RSA signature) is not a problem
for a DNS software already supporting DNSSEC.

Regards

Francis.Dupont@enst-bretagne.fr

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