enable DNSSEC with ispconfig 3.1, bind9 on ubuntu 14.04

Hi,
how to enable DNSSEC in bind9.9.5, ubuntu 14.04LTS ?

This page
https://www.icann.org/dns-resolvers-checking-current-trust-anchors

shows me, that my bind9 does not have DNSSEC.
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46266

 

will have to follow this too. but on debian

 

If you have the latest ISPConfig 3.1, when you create your dns zone manually, at the bottom you will see Sign zone (DNSSEC) to be ticked, if you want.