If you see something like: 1root@example.com:/etc/apache2/sites-enabled# ifconfig 2docker0 Link encap:Ethernet HWaddr 02:42:8e:e1:53:84 3inet addr:172.17.0.1 Bcast:0.0.0.0 Mask:255.255.0.0 4UP BROADCAST MULTICAST MTU:1500 Metric:1 5RX packets:0 errors:0 dropped:0 overruns:0 frame:0 6TX packets:0 errors:0 dropped:0 …