Alan Tu wrote: > The network was and is configured in network-manager. I should add that > one out of six or seven times, the connection is established automatically > at boot. Alan
Do you have anything in /etc/network/interfaces except lo? There should not be anything furthermore NetworkManager saves configuration under /var/lib/NetworkManager But it could be something else in your configuration - look in the journal/log or systemctl and post here sudo systemctl -l status network-manager regards
