OpenVPN Other DNS Servers ignored if no Search Domains specified

[Mark Rose]

On Kubuntu 18.04.2 LTS, with network-manager 1.10.14-0ubuntu2, DNS servers in "Other DNS Servers" are ignored unless a Search Domain is also specified. This difference can be seen in the output of `systemd-resolve --status`.

For my use case, I need to specify an additional DNS server but I have no need to specify a search domain. Specifying a bogus domain fixes the problem, and the DNS server appears in `systemd-resolve --status`.

I suspect this may be related to the fix for #1754671, which was released in 1.10.14-0ubuntu1.

[Till Kamppeter (till-kamppeter)]

First, please try the systemd SRU proposed in bug 1754671. If it does not solve your problem, do the following:

Please create the following files (and directories if needed for them):

1. /etc/systemd/journald.d/noratelimit.conf containing

RateLimitIntervalSec=0
RateLimitBurst=0

2. /etc/NetworkManager/conf.d/debug.conf

[logging]
level=TRACE
domains=ALL

Then restart journald:

sudo systemctl restart systemd-journald

and NetworkManager:

sudo systemctl restart network-manager

Then you get the full debug log of NetworkManager via

journalctl -u NetworkManager

After all that, reboot and/or connect to your VPN and do

journalctl -u NetworkManager > log.txt

and attach the log.txt file to this bug report. Do not compress the file and do not package it together with other files.

[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]