2023-12-26: initial release
2024-04-07: fixed missing/wrong netmask (ThX bitwiz@forum.checkmk.com)
            improved validation if SNMP input data
            drop this host ip address (0.0.0.0)
2024-12-02: incompatible: changed host label to nvdct/l3v4_host:yes and nvdct/l3v4_routing:yes
2024-12-03: added IP-MIB::ipAddressTable for IPv6 support
            incompatible: renamed to inv_ip_address -> remove inv_ipv4_address.mkp before updating
2024-12-05  changed to use ip_interface
2024-12-06: incompatible: changed hostlabel to nvdct/l3v4_topology:host and nvdct/l3v4_topology:router
2024-12-09: rewritten for CMK checkAPI 2.0