Undocumented feature, disable the broken DNS caching server by commenting out the dns line.
$ cat /etc/NetworkManager/NetworkManager.conf [main] plugins=ifupdown,keyfile #dns=dnsmasq [ifupdown] managed=false -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/968043 Title: network manager, manually specifying DNS servers for PPPoE connection does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/968043/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs