root@[]:/home/[]# ifconfig
enp7s0    Link encap:Ethernet  HWaddr 28:d2:44:0e:c5:db
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3142 errors:3142 dropped:0 overruns:0 frame:2841
          TX packets:1405 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:295440 (295.4 KB)
          Interrupt:19

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:16947 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16947 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2311802 (2.3 MB)  TX bytes:2311802 (2.3 MB)

root@[]:/home/[]# ifup enp7s0
Unknown interface enp7s0
root@[]:/home/[]# ping 8.8.8.8
connect: Network is unreachable
root@[]:/home/[]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface