Authentication error after MAC spoof

[Alex McIntosh1]

I was testing spoofing my MAC address on my home network, I used the normal busybox commands, and verified they worked and did indeed change the mac. However, when I tried to connect to a secured network, it said "Authentication error occurred" like I got the password wrong, and it prompted me for the password again.

When I went back to my normal MAC, it worked fine. (And no MAC filtering is not on)

galaxy s3 sph-1700
(Sprint Variation)
Rooted with Samsung's ROM and Busybox

busybox ifconfig wlan0 hw ether 00:11:22:33:44:55
I also tried a random MAC address generated from a website, didn't work.

 

[Alex McIntosh1]

Bump

 

[Rukbat]

There may be some way of authenticating a MAC (at least to check whether it's possible that the particular set of values can have been issued - something like a check digit on a credit card) and the addresses you're choosing are invalid. (That's one area I never got into - getting the lists of MAC addresses was always someone else's job.)

 

[Alex McIntosh1]

I know the mac is valid, I have tried a random mac generator.