Comment 0 for bug 1817903

Mint 19 (Ubuntu 18.04)

Following latest mint update done on 24/02/2019, DNS is broken....

nslookup and dig of certain domain names work as expected, ping does not (ip works but not domain name)

After a day of trial and error, testing I found that the problem lies with the presence of

"options edns0"

in /run/resolvconf/resolv.conf (link to by /etc/resolv.conf)

With option present many dns lookups fail with both FF and chrome browswers and thunderbird...
This is on a home network, with router set as dns proxy for external wan, not using NetworkManager

Deleting the option on live system results in the issue immediately disappearing, but on reboot it is added back in (by systemd-resolve ?)

I cannot find any option to prevent this being added, so presumably it is hard-coded in systemd following the update?

systemd:
  Installed: 237-3ubuntu10.13