Отключил модем. Выполнил команды.
enp1s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:19:66:8c:33:fd txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Локальная петля (Loopback))
RX packets 82995 bytes 83972994 (83.9 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 82995 bytes 83972994 (83.9 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0