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

Solution Verified - Updated -

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

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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