[RRG] Re: Should the identifier be used as local locator

[RJ Atkinson <rja@extremenetworks.com>]

Earlier, Christian Vogt wrote:
% you are absolutely right.  A multi-homed host would
% get multiple "host IDs", if we re-used the MAC address
% as a host ID.  This is one of the disadvantages of such re-use.

The above assumption is not necessarily the case.

For example, one easily could permit a MAC-derived
Identifier [ ID := f(any MAC on the node)] to be
a "Node Identifier" that would be interface independent.
[1]

ILNP does precisely that; this approach works just fine.

Cheers,

Ran

[1] For those who'd prefer not to use a MAC-derived ID,
that is also fine, just use the EUI-64 syntax, set the
Scope bit to "local", the Multicast/Unicast bit to "unicast"
since this is for a single node's ID, and put any 62 bits
that you choose into the EUI-64.  That also works fine,
though one should then be very sure to use IPv6 DAD or
Gratuitous ARP in case some other node happened to choose
the same other 62 bits.



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