ARIN to Allocate from 64.0.0.0/8

Hello,

Richard Steenbergen and Kai Schlichting discussed how this
new allocation policy affects ingress filtering. I was
disgruntled too when I heard of it for the same reason.

The way I fixed it was that I just changed the filter from
64.0.0.0/2 to 96.0.0.0/3. It isn't as perfect though of course.