Extra question: is Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP, as pointed related?
https://www.linode.com/community/questions/17384/error-server-returned- error-nxdomain-mitigating-potential-dns-violation-dve-2018 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1822416 Title: resolve: do not hit CNAME or DNAME entry in NODATA cache To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1822416/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs