Ok, here is the Maclist:
The duplicate entries @120, 121 and 122 are by intention. These are WLAN and Ethernet-Interaces of HP Laptops. The wlan-Interace is disabled by bios, if the laptop is plugged in. Consequently the laptop has just one IP regardless how it connects to my network. I know this is not “clean” but this is running on NS for about 3 years …
Oh, and I checked for douplicate MAC Adresses using Libreoffice calc - No MAC is in douplicate
|ACCEPT|br0|00:1D:AA:F7:1E:20|172.17.0.1|
|ACCEPT|br0|08:11:96:A0:FC:84|172.17.0.120|
|ACCEPT|br0|EC:9A:74:F5:AA:D6|172.17.0.120|
|ACCEPT|br0|60:67:20:00:58:4E|172.17.0.121|
|ACCEPT|br0|A0:B3:CC:C5:65:41|172.17.0.121|
|ACCEPT|br0|20:10:7A:1A:8E:7C|172.17.0.122|
|ACCEPT|br0|E4:11:5B:45:DA:7B|172.17.0.122|
|ACCEPT|br0|A0:CE:C8:33:50:9D|172.17.0.123|
|ACCEPT|br0|32:46:F0:61:64:E7|172.17.0.13|
|ACCEPT|br0|02:F7:6A:18:01:75|172.17.0.14|
|ACCEPT|br0|A6:65:45:CB:88:D1|172.17.0.15|
|ACCEPT|br0|82:DF:A1:2C:F9:79|172.17.0.150|
|ACCEPT|br0|70:70:0D:20:16:4A|172.17.0.151|
|ACCEPT|br0|18:70:3B:AF:F0:65|172.17.0.152|
|ACCEPT|br0|B8:F6:B1:EB:17:1B|172.17.0.153|
|ACCEPT|br0|70:48:0F:CD:B1:77|172.17.0.154|
|ACCEPT|br0|C0:B6:58:40:37:4E|172.17.0.155|
|ACCEPT|br0|10:4E:89:BC:E7:49|172.17.0.157|
|ACCEPT|br0|92:CC:17:9D:11:69|172.17.0.17|
|ACCEPT|br0|00:11:32:A6:F3:4F|172.17.0.18|
|ACCEPT|br0|46:F4:19:C1:7A:1F|172.17.0.180|
|ACCEPT|br0|92:D9:05:CA:34:32|172.17.0.181|
|ACCEPT|br0|00:11:32:A6:F3:50|172.17.0.19|
|ACCEPT|br0|00:50:7F:F0:F0:96|172.17.0.2|
|ACCEPT|br0|6A:E9:74:9E:F7:EF|172.17.0.225|
|ACCEPT|br0|08:EC:A9:52:FC:98|172.17.0.241|
|ACCEPT|br0|34:12:F9:EF:5C:2D|172.17.0.242|
|ACCEPT|br0|3C:6A:9D:01:07:F1|172.17.0.28|
|ACCEPT|br0|7C:DD:90:FD:0D:F8|172.17.0.29|
|ACCEPT|br0|30:D3:2D:3A:0E:2A|172.17.0.3|
|ACCEPT|br0|00:25:36:96:DD:AC|172.17.0.30|
|ACCEPT|br0|14:8F:21:C3:19:6F|172.17.0.31|
|ACCEPT|br0|AC:CF:23:F1:F3:B2|172.17.0.32|
|ACCEPT|br0|00:80:E1:C9:9A:9B|172.17.0.33|
|ACCEPT|br0|F4:06:8D:CB:01:F0|172.17.0.4|
|ACCEPT|br0|00:0E:58:BC:3C:B2|172.17.0.50|
|ACCEPT|br0|B8:E9:37:88:87:32|172.17.0.51|
|ACCEPT|br0|00:0E:58:9C:E9:AE|172.17.0.52|
|ACCEPT|br0|CC:98:8B:89:20:4C|172.17.0.53|
|ACCEPT|br0|20:C6:EB:3F:6B:E1|172.17.0.54|
|ACCEPT|br0|48:A6:B8:EC:44:6A|172.17.0.55|
|ACCEPT|br0|BC:60:A7:3B:BA:FA|172.17.0.56|
|ACCEPT|br0|60:12:8B:AA:4B:75|172.17.0.57|
|ACCEPT|br0|04:03:D6:53:B7:8E|172.17.0.58|
|ACCEPT|br0|54:84:7B:00:29:76|172.17.0.59|
|ACCEPT|br0|5C:AA:FD:5F:DD:72|172.17.0.60|
|ACCEPT|br0|BC:30:7D:2F:0D:69|172.17.0.61|
|ACCEPT|br0|00:1D:AA:9F:E9:00|172.17.0.7|
|ACCEPT|br0|00:1D:AA:9F:4E:54|172.17.0.8|
|ACCEPT|br0|00:1D:AA:9F:60:7C|172.17.0.9|