I have a bit of an issue with a bcm43xx internal card and mac spoofing. I'm had this issue doing a wireless security lab for school. I use macchanger to set my MAC to a known allowed address, but I cannot connect to the wireless network. Using ifconfig I can verify the MAC change, but can never connect. I had to boot back into winXP to be able to continue with the lab.

Just wondering if anyone here has any insight into why it would look as if it changed successfully, but didn't. Its also strange in that Wireshark only picked up broadcast traffic and never IP/TCP/UDP traffic that I *knew* was going through the air.