2018-06-15: changed item from neighbor id to neighbor ip
            added events as perfdata (incl. metrics file)
            moved part of the output to long output
            a little code cleanup to better match coding guide lines
2019-11-03: moved 'events' from infotext to longoutput
2020-07-26: added parse section, alias, wato for alias, not found and state
2021-09-15: rewritten for CMK 2.0
2023-04-22: moved wato/metrics file to ~/local/lib/check_mk/gui/plugins/(wato|metrics)