Hello, since I installed my firewall on Suse 7.0 & ipchain & Cable modem I got again and again 2 lines warnings: Dec  1 12:40:57 rosemary kernel: martian source 0100007f for 2da12fd5, dev eth0 Dec  1 12:40:57 rosemary kernel: ll header: ff ff ff ff ff ff 00 01 02 1c 5b b6 08 06 (where 0100007f = 127.0.0.1 & 2da12fd5 = 213.47.161.45) The log files firewal, warn & messages immediatly grow to 200 and more MB, which is pretty enoying. Of course first I look at my pc, but could find anything to stop that With Ksnuffle I found the corresponding info. to that: 11:40:57.794252: 1514: arp who-has 127.0.0.1. -> 213.47.161.45. : 11:40:57.794753: 1514: arp who-has 213.47.161.45. -> chello213047161001.15.univie.teleweb.at. : So now I think in the network of my provider some pc that are missconfigured :(. Can anybody tell my how I can prevent these and only these warnings been written into my log files? With my 6 weeks firewall experince I can't do myself unfortunately. I thank You in advance, Carl