1: lo: <LOOPBACK, UP, 10000> mtu 16436 qdisk noque
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scopehost lo
    inet6 ::1/128 scopehost
        valid_lft forever preferred_lft forever