Comment # 8 on bug 1188949 from Vladislav Milenin

Created attachment 852086 [details]
journalctl -b -u NetworkManager from a third-party repository

Yes, I noticed that I installed this package incorrectly. I installed it for
the second time, but this time correctly. Even in the config, NetworkManager
replaced dhcp=dhclient to dhcp=internal. I noticed a very strange behavior of
the network. The network was connected to the Internet normally for two days,
but this morning it refused to connect again. I had to use the phone as a USB
modem. In the afternoon, I turned it on again and the network was already
connected normally. The strange thing is that I noticed that if you connect the
Internet via your phone as a USB modem, then after disconnecting it from the
computer, the network sometimes connects correctly for some time.