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 inet6 XXX scope host valid_lft forever preferred_lft forever 2: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000 link/ether XXX brd XXX inet XXX brd XXX scope global dynamic noprefixroute usb0 valid_lft 2531sec preferred_lft 2531sec inet6 XXX scope global dynamic noprefixroute valid_lft 7163sec preferred_lft 7163sec inet6 XXX scope link noprefixroute valid_lft forever preferred_lft forever