Humble requests about well known address approach

[Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>]

Anyone want to post on well know addresses approach, please
read the draft

	draft-ohta-preconfigured-dns-00.txt

which is only 4 pages long.

In addition, please keep in mind that anycast itself does not
offer robustness/redundancy though load sharing can be, depending
on configuration, expected to some degree.

Reading RFC1546, in addition, may also be, though too old, helpful,
which states:

   DNS resolvers would
   no longer have to be configured with the IP addresses of their
   servers, but rather could send a query to a well-known DNS anycast
   address.

and

   When an anycast server fails,
   some datagrams may continue to be mistakenly routed to the server,

Note also that even the RFC made a mistake to state:

   the ARP
   hack, requires ARP cache timeouts for the anycast addresses be kept
   small (around 1 minute), so that if an anycast server goes down,
   hosts will promptly flush the ARP entry and query for other servers
   supporting the anycast address.

which actually is a useless configuration to be avoided, failure to
do so affected several points of the RFC.

						Masataka Ohta

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