TOSS 5 must configure a DNS processing mode set in Network Manager.

In order to ensure that DNS resolver settings are respected, a DNS mode in Network Manager must be configured.

Verify TOSS 5 has a DNS mode configured in Network Manager.

$ NetworkManager --print-config [main] dns=none

If the dns key under main does not exist or is not set to "none" or "default", this is a finding.

Configure NetworkManager in TOSS 5 to use a DNS mode.

In "/etc/NetworkManager/NetworkManager.conf" add the following line in the "[main]" section:

dns = none

Reload NetworkManager for the change to take effect.

$ sudo systemctl reload NetworkManager