84. ip

ip a add 192.168.1.50/24 dev enp3s0
ip a del 192.168.1.50/24 dev enp3s0
ip link set enp3s0 up
ip link set enp3s0 down
ip monitor

ip命令参考[https://www.cyberciti.biz/faq/linux-ip-command-examples-usage-syntax/]