On 23.10.2023 17:27, Michael Richardson wrote:
Maybe someone else can explain it back to me in a better way.

The fundamental issue is this:

 * If you are permitting an IP address in an ACL based on a name in a
   MUD file, the mapping to that address is valid for the greater of
   the TTL on the name or the state of a connection, assuming you have
   that state.  If the state isn't there and endpoints inappropriately
   cache the name beyond TTL, That Would Be Bad.

Eliot
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