Michael,
I totally understand the concern over circular dependencies. They are
not to be underestimated. And in a service provider environment I think
you must be doubly cautious about them. However, in an enterprise
environment it may be appropriate to make certain allowances for certain
services, and under certain circumstances. For instance, a load
balancer may require DNS to be functioning already in order for it to
service requests. Similarly, it may be possible to "secondary" a zone
in order to be able to bring up certain other services, such as NTP. It
is *even* possible to retain policy in DNS if one really wants to do so
under such circumstances, but one has to at that point consider what
your failsafe is.
Ultimately, however, the administrative issues of renumbering revolve
around an inability to abstract IP address information. In solving that
problem, however one performs the dereference from abstract to concrete,
one must worry about dependency loops. A configuration server could
just as easily be unavailable, for instance, as a name server.
Eliot
--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
