Mikhail Teterin wrote:

> Does natd(8) really need to see _all_ packets?

Not at all, as you've guessed.  Subtleties abound with stateful
rules, and side effects of using the divert mechanism, such as:
after returning from natd packets don't know which interface they
came in on.  Matching rules therefore becomes tricky.

I manage to do without skipto rules, your kilometrage may vary.
Traffic that is destined to the host itself from the outside
may be handled via rules that match before reaching the divert
rule(s).  Likewise, traffic that is between hosts on the local
nets may be matched before nat'ing.


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