I have read many tutorials on ettercap and seen many videos. So I've tried to arp poison my lan. Everything goes smooth, but when I use the ettercap plugin chk_poison it comes back "chk_poison: No poisoning at all ". When I open wireshark to see whats going on it looks like the poising has worked on my router as well as my target .
	ARP is at 00:11:22:33:44:55 (duplicate use of detected!)
ARP is at 00:11:22:33:44:55
ettercap statistics
Received packets    : 13032368924
 Dropped packets     :        0  0.00 %
 Forwarded           :    74647  bytes: 63237265
( I spoofed my mac to make it easier to track). What's going on here?