сетевой менеджер перезагрузил Ubuntu
sudo service network-manager restart
Victorious Vole
sudo service network-manager restart
Linux Network
#To Restart network
$ sudo /etc/init.d/networking restart
#To stop and start use the following option (do not run them over remote ssh session as you will get disconnected):
$ sudo /etc/init.d/networking stop
$ sudo /etc/init.d/networking start
#Debian/Ubuntu Linux with systemd, run:
$ sudo systemctl restart networking
or
$ sudo systemctl restart NetworkManager.service