d9b36adf9d
Allow set 31 to be used for rules other than 65535. Set 31 is still special because rules belonging to it are not deleted by the "ipfw flush" command, but must be deleted explicitly with "ipfw delete set 31" or by individual rule numbers. This implement a flexible form of "persistent rules" which you might want to have available even after an "ipfw flush". Note that this change does not violate POLA, because you could not use set 31 in a ruleset before this change. Suggested by: Paul Richards
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