Running "sudo ufw enable" enables and starts ufw for the current session.

In order for it be started automatically on system startup, it's necessary to
tell systemd to do so (systemctl status ufw).

However, upon booting, ufw is inactive.

"systemctl status ufw" outputs

~ $ systemctl status ufw
��� ufw.service - /etc/init.d/ufw Compatibility
   Loaded: loaded (/usr/lib/systemd/system/ufw.service; enabled; vendor preset:
disabled)
   Active: failed (Result: exit-code) since mi�� 2016-11-02 13:35:51 ART; 43min
ago
  Process: 1066 ExecStop=/etc/init.d/ufw stop (code=exited, status=203/EXEC)
  Process: 1062 ExecStart=/etc/init.d/ufw start (code=exited, status=203/EXEC)
 Main PID: 1062 (code=exited, status=203/EXEC)

The systemd unit file references /etc/init.d/ufw, which doesn't exist.

This same bug was reported against Openseuse Leap 42.1 [1].

[1] https://bugzilla.opensuse.org/show_bug.cgi?id=971327