How to uninstall or remove ifupdown-multi software package from Ubuntu 16.04 LTS (Xenial Xerus)

You can uninstall or removes an installed ifupdown-multi package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,

$ sudo apt-get remove ifupdown-multi

Uninstall ifupdown-multi including dependent package

If you would like to remove ifupdown-multi and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove ifupdown-multi

Use Purging ifupdown-multi

If you use with purge options to ifupdown-multi package all the configuration and dependent packages will be removed.

$ sudo apt-get purge ifupdown-multi

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove ifupdown-multi