Hi,
The presentation on U/G bits that is archived online (PDF)
at the IETF web site has the text below on Slide 4:
ILNP does have the constraint that its Node Identifiers
must be unique within a given site, but as we have just shown,
the state of the u bit does not in any way guarantee this.
That statement quoted just above is NOT correct.
The correct statement is:
ILNP has the constraint that a given Node Identifier
MUST be unique within the context of a given Locator
(i.e. within a single given IPv6 subnetwork). This is
guaranteed by existing IPv6 mechanisms (e.g. IPv6 ND).
Yours,
Ran
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