Kai-Heng, At least for me, it's working now. Btw, before changing DNSSEC=off, I tested removing dnsmasq to keep only systemd-resolved(as someone mentioned above), and systemd-resolved didn't resolve any domain. I had to install dnsmasq again to have some sort of connection.
Is this bug related to this one[1]? [1] https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1624320 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670959 Title: systemd-resolved using 100% CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1670959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs