DHCPv6 failover protocol?

[Frank Sweetser]

While poring over RFC3315, I was curious how the validation section for Renew 
and Rebind messages interacts with failover.  The RFC states that for Renew 
messages:

    Servers MUST discard any received Renew message that meets any of the
    following conditions:

    -  the message does not include a Server Identifier option.

    -  the contents of the Server Identifier option does not match the
       server's identifier.

So if you have two servers, A and B, and server A goes down, how will server B 
react?  Is it permitted to start answering messages with the DUID of A, or 
does it have to wait for the clients to give up and send out a new Solicit 
message?

-- 
Frank Sweetser fs at wpi.edu  |  For every problem, there is a solution that
WPI Senior Network Engineer   |  is simple, elegant, and wrong. - HL Mencken
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