pfSense

addition:

for some reason I see .db file of deleted CP zone after reboot (also if 'rm /var/db/captiveportal*'):

# ls /var/db/captiveportal*
/var/db/captiveportal_online_users
/var/db/captiveportaldn.rules
/var/db/captiveportalzone22.db
/var/db/captiveportalzone999.db  -- deleted and not present in config.xml

and a bunch of deleted zones lock files:

# ls /tmp/captiveportal*.lock
/tmp/captiveportalcpzone555.lock   /tmp/captiveportaldbzone11.lock    /tmp/captiveportalzone11.lock
/tmp/captiveportalcpzone666.lock   /tmp/captiveportaldbzone22.lock    /tmp/captiveportalzone22.lock
/tmp/captiveportaldbcpzone555.lock /tmp/captiveportaldbzone999.lock   /tmp/captiveportalzone33.lock
/tmp/captiveportaldbcpzone666.lock /tmp/captiveportalrulesdn.lock     /tmp/captiveportalzone999.lock

# ls /tmp/rcprunecaptiveportal*.lock
/tmp/rcprunecaptiveportalcpzone555.lock   /tmp/rcprunecaptiveportaldbzone11.lock    /tmp/rcprunecaptiveportalzone11.lock
/tmp/rcprunecaptiveportalcpzone666.lock   /tmp/rcprunecaptiveportaldbzone22.lock    /tmp/rcprunecaptiveportalzone22.lock
/tmp/rcprunecaptiveportaldbcpzone555.lock /tmp/rcprunecaptiveportaldbzone999.lock   /tmp/rcprunecaptiveportalzone33.lock
/tmp/rcprunecaptiveportaldbcpzone666.lock /tmp/rcprunecaptiveportalrulesdn.lock     /tmp/rcprunecaptiveportalzone999.lock

something wrong with unlock()

see also #10891