[root@localhost yum.repos.d]# ip addr
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: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 1c:1b:0d:e5:33:7f brd ff:ff:ff:ff:ff:ff
    inet 10.168.1.128/24 brd 10.168.1.255 scope global noprefixroute dynamic enp0s31f6
       valid_lft 168672sec preferred_lft 168672sec
    inet6 fe80::509c:cb5e:97c6:b3c8/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

yum install -y net-tools