[Bug 1988119] Re: Update to systemd 237-3ubuntu10.54 broke dns

[Luciano Santos da Silva]

Hey guys, nothing is working. My application has been out since this
early morning. We have already tried to restart the nodes, restart the
VM, but nothing has been working and we don't have any update from
Microsoft. 4 hours ago they said "More information will be provided
within 60 minutes, when we expect to know more about the root cause and
mitigation workstreams.".

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1988119

Title:
  Update to systemd 237-3ubuntu10.54 broke dns

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  Two servers today that updated systemd to "systemd 237-3ubuntu10.54" 
  https://ubuntu.com/security/notices/USN-5583-1

  could not resolve dns anymore.
  no dns servers, normally set through dhcp.

  Ubuntu 18.04

  Temp fix.
   1. Edit /etc/systemd/resolved.conf
   1. Add/Uncomment # FallbackDNS=168.63.129.16
   1. Restart systemd-resolved sudo systemctl restart systemd-resolved.service
   1. Confirm dns working with systemd-resolve google.com

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1988119/+subscriptions