unbound-libs update triggered a root update even though services are disabled.

Issue

• unbound-libs update triggered a root update even though the services were disabled.
• unbound-anchor send DNS query to root NS servers which generates alerts in security systems.
• unbound-anchor send DNS query to root NS servers periodically once in a day.
• unbound-anchor send DNS query to root NS servers periodically in midnight.
• Would it be possible to set a proxy server for just update unbound ROOT trust/database ?
• How to prevent unbound-anchor not to query root NS servers ?
• Recent update for unbound-libs triggered a root dns update even though unbound-anchor.service and unbound-anchor.timer are disabled.

[root@localhost ~]# systemctl cat unbound-anchor.timer
# /dev/null
[root@localhost ~]# systemctl cat unbound-anchor.service
# /dev/null