After Ubuntu 18.04, ‘service networking restart’ has replaced by netplan Donghowa2020-04-26T17:32:35+08:00April 26th, 2020|Categories: Ubuntu|Tags: ubuntu 18.04, ifupdown, netplan, ifconfig| Copy to Clipboardsystemctl restart networking service networking restart ifup && ifdownthe above commands has replaced with below commands. Copy to Clipboarddonghowa@ntp:~$ cat /etc/network/interfaces # ifupdown has been replaced by netplan(5) on this system. See # /etc/netplan for current configuration. # To re-enable ifupdown on this system, you can run: # sudo apt install ifupdown root@ntp:/home/donghowa# netplan apply root@ntp:/home/donghowa#of you can install ifupdown Copy to Clipboardroot@ntp:/home/donghowa# ifdown eth0 Command 'ifdown' not found, but can be installed with: apt install ifupdown apt install ifupdown2 apt install netscript-2.4For More Detailed Information. Always thanks for your contributions.