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 noprefixroute valid_lft forever preferred_lft forever 2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether XXX brd XXX altname enxa8a15987fe32 inet XXX brd XXX scope global dynamic noprefixroute enp0s31f6 valid_lft 19462sec preferred_lft 19462sec inet6 XXX scope global dynamic noprefixroute valid_lft 86204sec preferred_lft 3404sec inet6 XXX scope link noprefixroute valid_lft forever preferred_lft forever