1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback XXX brd XXX inet XXX scope host lo valid_lft forever preferred_lft forever 2: wlp0s20f3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether XXX brd XXX inet XXX brd XXX scope global dynamic noprefixroute wlp0s20f3 valid_lft 14340sec preferred_lft 14340sec inet6 XXX scope global temporary dynamic valid_lft 604743sec preferred_lft 86204sec inet6 XXX scope global dynamic mngtmpaddr noprefixroute valid_lft 2591943sec preferred_lft 604743sec inet6 XXX scope link noprefixroute valid_lft forever preferred_lft forever 3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default link/ether XXX brd XXX inet XXX brd XXX scope global docker0 valid_lft forever preferred_lft forever