2016-08-22: removed index column
2017-07-01: fixed device ID as MAC address (HPE)
2018-01-24: added local port info, remove 'useless' oid's
2018-09-04: changes for CMK 1.5.x (inv_tree --> inv_tree_list)
2020-03-15: added support for CMK1.6x
2020-07-31: added short interface names, code cleanup
2021-03-16: rewrite for cmk 2.0
2001-03-18: removed disable option from WATO
2021-06-14: fixed capabilities (changed to binary/binascii) thanks to andreas[dot]doehler[at]gmail[dot]com