Heres the senerio....
When I tcpdump my lan I see normal arp request and microsoft net-bios traffic....all normal. I am behind a hardware firewall ...I see many requests, be it http(80) or AIM(5190) on subnet 192.168.1.100 or somthing alike ...all normal if that was the subnet I was using , but its not , granted I am using a non-routable subnet but not the same one. I have checked all systems on the network and non have this IP . Even wierder is if I sniff the connection I can see traffic passing . is it possible that this traffic is getting forwarded to all hosts on my cable connections? anybody got any ideas as to what is happening... Thanks