It's definitely not just you, @hoppel118, I'm having the exact same issue as well. Rolled back for now to 3.16; wish there was a way I could easily get 4.6 working because that was what I did all my ZFS testing on in the first place.
I was also seeing DKMS errors on the iSCSI builds after the upgrade to the new kernel, but I'm not using that just yet.