Networksetup

networksetup is a macOS configuration command for network settings.

• networksetup -listallnetworkservices
• networksetup -listnetworkserviceorder (includes interface names)

Change DNS services: networksetup -setdnsservers Network_Service_Name YOU.RDNS.IP

• networksetup -setdnsservers Wi-Fi 8.8.8.8
• networksetup -setdnsservers "USB 10/100/1000 LAN" 8.8.8.8 1.1.1.1

Check configuration: scutil --dns

• networksetup -setsearchdomains Ethernet example.com
• networksetup -setsearchdomains Wi-Fi example.com

Check configuration: scutil --dns

• networksetup -setsearchdomains "USB 10/100/1000 LAN" example.com

Check configuration: scutil --dns | grep "search domain"

• networksetup -listnetworkserviceorder

Activities

• Create an IP alias in macOS: https://apple.stackexchange.com/questions/296647/how-do-i-create-a-static-permanent-ifconfig-alias
• Renew DHCP address in your macOS from command line

See also

• networksetup, networksetup -setdnsservers, networksetup -listallnetworkservices, networksetup -listnetworkserviceorder, -listallhardwareports
• macOS: networksetup, ifconfig, ipconfig [ getifaddr ] , scutil

https://www.unix.com/man-page/osx/8/NETWORKSETUP/