Prevent bug in 'ufw --dry-run reset' to delete firewall rules.

changelogs/fragments/ufw-reset-check-mode.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+- "ufw - when using ``state: reset`` in check mode, ``ufw --dry-run reset`` was executed, which causes a loss of firewall rules. The ``ufw`` module was adjusted to no longer run ``ufw --dry-run reset`` to prevent this from happening."

lib/ansible/modules/system/ufw.py

@@ -301,6 +301,8 @@ def main():
         cmd = [[ufw_bin], [module.check_mode, '--dry-run']]
 
         if command == 'state':
+            if value == 'reset' and module.check_mode:
+                continue
             states = {'enabled': 'enable', 'disabled': 'disable',
                       'reloaded': 'reload', 'reset': 'reset'}
             execute(cmd + [['-f'], [states[value]]])