When I run `ipfw -t list` on release/12 or current, I get misaligned
output between lines that do and do not have a last match timestamp,
like so:

00100 Tue Aug 11 03:03:26 2020 allow ip from any to any via lo0
00200                         deny ip from any to 127.0.0.0/8

(specifically, the "allow" and "deny" strings do not line up)