These is a second issue here - the upgrades also adds the include mentioned in James's attachment:
include "/etc/bind/maas/named.conf.options.inside.maas";
This file, in my case, contained three lines:
allow-query { any; }; allow-recursion { trusted; }; allow-query-cache { trusted; };
Since our original config already set values for both allow-query and allow-query-cache, bind9 refused to start post-upgrade until I either commented out the duplicate line in the include file, or in our own config.
These is a second issue here - the upgrades also adds the include mentioned in James's attachment:
include "/etc/bind/ maas/named. conf.options. inside. maas";
This file, in my case, contained three lines:
allow-query { any; };
allow-recursion { trusted; };
allow-query-cache { trusted; };
Since our original config already set values for both allow-query and allow-query-cache, bind9 refused to start post-upgrade until I either commented out the duplicate line in the include file, or in our own config.