Summarizing the heise.de article: apparently someone put links to porn-broker trafficholder.com somewhere, there the requests got redirected to the freshly registered movfile.net, forwarding to redtube.net. On movfile.net the IP addresses got harvested. trafficholder.com was primarily used to generate traffic from Germany to the videos in question.

If this is what happened it seems a bit more far-reaching than just an exploit of IP law challenged courts.