This is the revision history for port 1701 in <freenode.net:#perlbot>

factoid_idsubjectcopulapredicateauthornamespace
1590 port 1701 is port 1701: l2tp - l2tp perlbot <*:##NULL>
1589 port 1701 is port 1701: l2f - l2f perlbot <*:##NULL>