snmp-interfaces.host into the prerule and out of the action. Otherwise,
being default, this is the only script that runs during the prescan by
default.
socket:connect(host.ip, port.number)
socket:connect(host.ip, port.number, port.protocol)
to this:
socket:connect(host, port)
connect can take host and port tables now, and the default protocol is
taken from the port table if possible.