We had a bug like this in an old release, the PM wouldn't put addresses
back in the pool when they were free, so it would run out and couldn't
assign anything but 0.0.0.0. As far as I know, that bug was squashed, but
3.1.3 had a few other problems, maybe it has a siilar problem. I'd go to
3.1.4 and see if it clears up, since it is a better release in any case.
We do still see it from time to time in other releases, but usually the
occurance is very random and non-repeatable, which makes it next to
impossible to nail down. Usually it happens once briefly, gets cleared
up, and doesn't recur.
-MZ
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