Sorry, but it seems like caches settings, even after Network-manager has been restarted. After system reboot it was fine with that option, so I copied my file configuration back to /etc/NetworkManager/dnsmasq.d, was also fine, but settings from that file did not take effect. After reboot it stops to resolve any DNS address as per description. here is my conf file:
#addn-hosts=/home/alex/docker/test/system-config/hosts server=/my-super-domain.com.au/172.18.0.1 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1764025 Title: Network manager doesn't work with option: dns=dnsmasq Status in network-manager package in Ubuntu: New Bug description: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu Bionic Beaver (development branch) Release: 18.04 Codename: bionic $ uname -a Linux alex-VirtualBox2 4.15.0-13-generic #14-Ubuntu SMP Sat Mar 17 13:44:27 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ apt-cache policy network-manager network-manager: Installed: 1.10.6-2ubuntu1 Candidate: 1.10.6-2ubuntu1 Version table: *** 1.10.6-2ubuntu1 500 500 http://au.archive.ubuntu.com/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status $ apt-cache policy dnsmasq dnsmasq: Installed: (none) Candidate: 2.79-1 Version table: 2.79-1 500 500 http://au.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 500 http://au.archive.ubuntu.com/ubuntu bionic/universe i386 Packages Once I set: [main] plugins=ifupdown,keyfile dns=dnsmasq # <- this line was added ... DNS resolving stops to work. $ ping google.com.au ping: google.com.au: Temporary failure in name resolution $ nslookup google.com.au Server: 127.0.0.53 Address: 127.0.0.53#53 ** server can't find google.com.au: SERVFAIL it's only one setting I changed. /etc/NetworkManager/dnsmasq.d folder is empty. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1764025/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp