@mattb @opendna @eff by the way, HE is not a tier 1 ISP — they purchase transit from Telia to reach Cogent, for example.
IncogNET (the hosting provider used by KF) was also previously multihomed, but their other transit got terminated for the same reason — they refuse to follow industry standard practices, like enforcing a real AUP.
@ariadne Then I think HE should have threatened to do the same, and block IncogNET entirely if it didn't comply.
I think the eff position only about filtering in the middle of the chain, therefore blocking your direct customer is the correct action here. It also ensures the correct parties get involved in the fight. KF (or any other customer that could be involved in this type of filtering as no one here gives damn about KF) has no mutual contact or obligations with HE...