On Tue, Mar 15, 2016 at 10:53:05PM +0900, Manabu Sonoda <mail at manabu-sonoda.com> wrote a message of 11 lines which said: > ALL IPv4 reverse zones are broken. Dangling DS. https://zonemaster.net/test/0d5cf77c3afaa6f6 https://zonemaster.net/test/2bd4aa3115fd7215