Purge orphanized hosts caused by incrementation functions

IP-addresses are counted even if they are listed on local networks. The cause of this are coming from the whitelist procedure, that is actually running after the blacklisting process.

When the whitelisting process has been runned, the incrementation table will leave a bunch of orphans, that belong to those internal networks. They must be purged also, or we will sit with a table full of garbage very soon.