> >> b) What's the security model by which the router decides 
  > whether to
  > >>    accept routing updates from the DNS server?
  > > 
  > > The same model that is used between routers in the network.
  > 
  > Right, so this approach adds a whole new set of boxes that 
  > can mess up
  > your routing system.  This does not strike me as a good thing.

=> Which boxes does it add? I really don't see any more
boxes here. Note, I'm not advocating this particular
approach (injecting routes from the DNS) but I don't
agree with your claim above, and I think it can work. 

I think something like MLD extensions would be much cleaner.

  > > That's up to your implementation.  The DNS is the only 
  > server using
  > > this address, so you can tie them together.
  > 
  > Sure.  One can do the same kind of thing with the DHCP approach (use
  > SO_REUSEPORT or whatever and tie the DHCP mini server to the DNS
  > server).

=> I believe you :), in fact, since you read the draft
(twice now ;) ) you would have seen that DHCP messages
were also considered for the 'content' part of the
discovery. 

  > The point was just that exactly the same considerations apply to the
  > anycast proposal as apply to other proposals.

=> I think you're mixing the 'content' of the message
used for discovery and the method used for transporting
that message to the right server. Anycast does the latter.
So I don't know why you're comparing anycast with DHCP.
DHCP can also use anycast in theory, I never tried 
it.

Hesham
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