IPv6 Address Planning

Randy Bush randy at psg.com
Wed Aug 10 23:47:23 UTC 2005


> it is not trival to renumber a network that is managable.

this is the key point, e.g. why autoconf is useless in the real
ops world.  until interfaces have long-lived identities other
than their ip addresses, real networks will bind to real ip
addresses which must propagate far enough to get to very remote
management stations and aggregators.

systems where dynamic assignment is pushed from a database, e.g.
dhcp, which can be accessed from the management system are just
starting to being used.  the rest of the real managed world is
still static.  those are the only two games in the managed town,
of which i am aware.

the rest of the brilliant ideas are managable-ops-clue-free
fantasies, propaganda, or both.  e.g. auto-conf is a non-starter
except on a small home network.  link local is a non-starter.
...

randy




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