*** This bug is a security vulnerability ***
Public security bug reported:
in all linux including ubuntu up to version 21.04, when dns is set to not
automatic in network manager and one dns is set manually (exemple 1.1.1.1) when
openvpn is used the dns is going through the vpn tunnel.
On ubuntu 21.10 (I tested ubuntu, ubuntu mate and xubuntu)I can affirm the dns
in this case is not going trough the vpn.it is leaking.I have used ubuntu for
years this is first time this problem occurs (21.10).(and it s not just a
question of packages because on my arch linux installs I never had such
problem, so it must be a config problem.
(when using packages stubby or dnscrypt-proxy (to encrypt dns queries)
and dns 127.0.0.1 is set in network-manager the dns does goes trough the
vpn (but stubby service needs to be sometimes reloded, it is less
reliable that it used to be with previous versions of ubuntu)
(I cannot speculate where the bug is from (network-manager, systemd
resolved etc)
** Affects: ubuntu
Importance: Undecided
Status: New
** Information type changed from Private Security to Public Security
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https://bugs.launchpad.net/bugs/1948533
Title:
any dns defined in network-manager doesnt go in openvpn tunnel (leaks
on gnome/mate/xubuntu only in 21.10)
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