Bind - Update db root hints

The command below updates the db.root file:

dig +bufsize=1200 +norec NS . @a.root-servers.net | egrep -v ';|^$' | sort > /etc/bind/db.root rndc reload

Sources:

  • http://www.unixfu.ch/how-do-i-update-the-root-hints-data-file-for-bind-named-server/