Itojun,
Sorry for the delay in this response. Answers below...
Jun-ichiro itojun Hagino wrote:
> 1. response type against renew request
> consider the following transaction. what will be the message type for the
> reply against renew request?
>
> reqestor -> delegator (multicast):
> icmp6 type = prefix request, icmp6 code = delegator query (0)
> delegator -> requestor:
> icmp6 type = prefix reply, icmp6 code = prefix delegator (0)
> requestor -> delegator:
> icmp6 type = prefix request, icmp6 code = initial request (1)
> delegator -> requestor:
> icmp6 type = prefix reply, icmp6 code = prefix delegated (4)
> (lifetime passes)
> requestor -> delegator:
> icmp6 type = prefix request, icmp6 code = renewal request (2)
> delegator -> requestor:
> icmp6 type = prefix reply, icmp6 code = ????
Unless we can find a good reason for a new code, the response will be
"prefix delegated (4)" same as the initial reply.
>
> 2. authorization faiulure
> how does authorization fail when the protocol does not provide any
> authentication mechansisms? does it assume any ipsec assumptions, like
> "ipsec AH failure is visible to delegator daemon, and delegator can
> request AH"?
I have not had a chance to look into the authorization mechanisms
yet. I do not envision creating a new authorization mechanism here.
Most likely IPSec will be the recommended approach.
>
> 3. state machine
> apparently state machine has to be maintained by the implementation of the
> protocol. if there is a diagram of state machine (to understand what are the
> expected messages and what are not) it would help us understand the protocol
> much. maybe it is too much to ask.
I have not created one, but we will take it under advisement. :)
Thanks,
Brian
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