> Why shouldn't an address be in the DNS? And how can you tell
> that an address, deprecated for your particular instance, has
> not been re-issued and is valid for some other system?
The usual reason for putting a node's address in the DNS is so that someone
else can look it up and use the address to contact the node. Deprecated
addresses are not supposed to be used for new communication. So it seems
counterproductive to put deprecated addresses in the DNS.
I don't understand your comment about reissuing an address. A unicast
address should only be assigned to one node (or more strictly, interface).
If an address that was assigned to node X is now assigned to node Y, then of
course a DNS lookup of X's name should not return the address.
Rich
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