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: enp42s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether XXX brd XXX altname enxd843ae4214dd inet XXX brd XXX scope global dynamic noprefixroute enp42s0 valid_lft 863398sec preferred_lft 863398sec inet6 XXX scope global dynamic noprefixroute valid_lft 7108sec preferred_lft 1246sec inet6 XXX scope global dynamic noprefixroute valid_lft 7108sec preferred_lft 3508sec inet6 XXX scope link noprefixroute valid_lft forever preferred_lft forever