So i downloaded backtrack4 r1 and ran it on my Intel mac via Parallels.
So i run ettercap GTK
click unified sniffing
click hosts>scan for hosts
i click hosts>hosts list.
I choose the router and click add target1.
i click plugins and enable dns_spoof
then i go mitm>arp poisoning and check sniff remote connections
now i go start sniffing and it says Started unified sniffing
now it says SEND L3 ERROR dadadad was not forwarded dadadad (no buffer space available)
So in parallels i give the thing 1.5gb ram and my mac is capable of 2gb
Please help me people!