Thank you for the report and apologies for the (very late) reply. The patch mentioned in the description is present since bind9 9.11.0 version, which first appeared in Bionic. For this reason, I'm closing this bug as Invalid.
Thank you. ** Changed in: bind9 (Ubuntu) Status: Triaged => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1584077 Title: Backport 'prefetch' fix from 9.10.4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/1584077/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs