The ``negate_networks`` table is duplicated in ``rules.debug``
In #13049 the logic to generate the
negate_networks table changed ( 415a1b2083228030f200c8ea0eac3a8fc91f7142 ) and then in a later commit, the old code that made
negate_networks was put back ( 7c2468c510ea7da6f284a7afad7f62c6c9880717 ), but the later commit did not remove the other new code. This leads to a duplication of the line in the rules.debug file.
It does not appear to cause an error, but it is undesirable behavior.