1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether fa:16:3e:1c:f2:e9 brd ff:ff:ff:ff:ff:ff
    altname enp0s3
    inet 10.0.0.17/24 metric 100 brd 10.0.0.255 scope global dynamic ens3
       valid_lft 604440sec preferred_lft 604440sec
    inet6 fe80::f816:3eff:fe1c:f2e9/64 scope link 
       valid_lft forever preferred_lft forever
3: fan-252: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UP group default qlen 1000
    link/ether 76:fa:fa:dc:d1:c7 brd ff:ff:ff:ff:ff:ff
    inet 252.17.0.1/8 scope global fan-252
       valid_lft forever preferred_lft forever
    inet6 fe80::74fa:faff:fedc:d1c7/64 scope link 
       valid_lft forever preferred_lft forever
4: ftun0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue master fan-252 state UNKNOWN group default qlen 1000
    link/ether aa:87:90:4f:36:c1 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::d0ee:16ff:fef4:4b38/64 scope link 
       valid_lft forever preferred_lft forever