BIND daemon is failing to start after an update
Symptoms
After updating system packages (for example, within ispmanager 6 update), daemon of the DNS server BIND is failing to start and following errors occurred:
named[44257]: /etc/bind/named.conf.options:25: option 'dnssec-enable' no longer exists
named[44257]: loading configuration: failure
Causes
The DNS server BIND updated to version 9.18.0 that is no longer support the option «dnssec-enable». It was made obsolete in version 9.16.0.
Solution
Remove or comment strings with dnssec-enable yes;
and dnssec-lookaside auto;
in BIND configuration file at /etc/bind/named.conf.options
.
After applying changes, restart BIND daemon by executing following command:
systemctl start bind9