[atlas] Garbage Measurements

Hello, at the moment I'm seeing a lot of measurements on my both probes, that doesn't have any live target and, sometimes, have even invalid targets like 2001:db8:0:dead:beef::1 which is part of the IPv6 for documentation purposes. I've made a screenshot here: http://i.imgur.com/PRXHsOZ.png Can someone from RIPE check this out? Not sure if there is someone abusing RIPE Atlas in a nasty way. Michael