Re: [Madwifi-users] Change MacAddr through madwifi sources?

[fronteiradigital <fro...@gm...>]

Jason wrote:
> fronteiradigital wrote:
>   
>> Jason wrote:
>>     
>>> Please make sure to CC the list...
>>>
>>> fronteiradigital wrote:
>>>  
>>>       
>>>> Yes. I tried every method including the wiki instructions about this
>>>> issue.
>>>>
>>>>    wlanconfig ath0 destroy
>>>>    ip link set dev wifi0 down
>>>>    macchanger -m 00:01:02:03:04:05 wifi0
>>>>    sysctl -w dev.wifi0.ledpin=3      (This will enable the blinking
>>>> leds)
>>>>    sysctl -w dev.wifi0.softled=1      (The same)
>>>>    ip link set dev wifi0 up
>>>>    wlanconfig ath0 create wlandev wifi0 wlanmode sta
>>>>
>>>> Didn't work.
>>>> Changing it in the source would solve it for sure, but, there is SO MUCH
>>>> CODE... (where should i start?)
>>>>     
>>>>         
>>> How are you confirming the change (or lack thereof)?  I do it every day
>>> and for years now on most versions of madwifi.  It definitely works.
>>> Changing it in the source is not the answer (although it would work).
>>> Something else is wrong.
>>>
>>> How about a little more info?  What distro are you using, version of
>>> madwifi?  Version of the kernel?  mods you have made?
>>>
>>> Jason.
>>>
>>>   
>>>       
>> ------------------------------------INFO------------------------------------
>>
>> lspci -nn
>>        Ethernet controller [0200]: Atheros Communications Inc. AR242x
>> 802.11abg Wireless PCI Express Adapter [168c:001c] (rev 01)
>>
>> madwifi version
>>        /usr/src/madwifi-hal-0.10.5.6-r3861-20080903
>>
>> Ubuntu 8.04 original kernel version
>>        2.6.24-21-generic
>>
>> wpa_supplicant version
>>        0.5.8
>> ---------------------------------PROBLEMS---------------------------------
>> Connection with unecncrypted AP works perfetctly. (In fact, it's the
>> best wifi card I ever got)
>> Connection with WPA protected and MAC addr filtering don't.
>>
>>     
>
> I'll bet this is your problem.  I've noticed that madwifi/Atheros
> sometimes fubar's the mac like so.  If I think it is 00:11:22:33:44:55,
> what is in the air is 06:11:22:33:44:55.  Or vice versa.  I'm not sure
> why it happens...  Try changing that first octet in your mac.  You may
> have to OR it.
>
>   
>> Couldn't test WPA without MAC filtering, so, i really don't know if it
>> is a problem with wpa_supplicant, but i am quite sure it is not. It's
>> the same behaviour when i don't change my Mac addr and try to connect.
>>
>>     
>
> Why can't you apply the mac filter on the AP without WPA?  Nevermind,
> see below.
>
> As an aside, you may want to set up another machine with kismet or
> wireshark running to confirm the address change.
>
>   
>> I want to use the MAC addr from my old laptop so I don't have to wait
>> weeks for the crazy burocracy.
>>     
>
> Ahhh...  I see.  You don't have access to the AP.  Try the hint I
> suggested above.  I like where your going in the code.  I'll take a look
> at it tonight and see if I can dig up anything...
>
> Jason.
>
>
>
>   

Good news, my problem is solved. After days of source-code reading I 
gave up, and went to a different approach.
I rebuilt both madwifi and wpa_supplicant from source, and it is working 
perfectly!!!
So, it turns out that my problem was with wpa_supplicant and the macaddr 
change was ok (Well, almost, it still inserts one crazy 6 in the 
beginning of the macaddr, but it's just a matter of ifconfig ath0 
down->macchanger->ifconfig ath0 up)

Thx Jason


Mark