01:55:29:~$ cat /etc/resolv.conf
nameserver 8.8.8.8
01:55:48:~$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
#dns=none

[ifupdown]
managed=false
01:56:09:~$ cat /run/systemd/resolve/resolv.conf
# This file is managed by systemd-resolved(8). Do not edit.
#
# Third party programs must not access this file directly, but
# only through the symlink at /etc/resolv.conf. To manage
# resolv.conf(5) in a different way, replace the symlink by a
# static file or a different symlink.

nameserver 8.8.8.8