[Question] How to spoof your MAC address? - Galaxy S II Q&A, Help & Troubleshooting

Anyway to spoof your MAC address on the SGS2?
Tried the standard linux terminal tricks but no joy!
Anyone managed it?
Thanks

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Also trying to get this, but no luck so far. I tried using busybox and terminal emulator using this command:
# ip link set eth0 XX:XX:XX:XX:XX:XX
which is supposed to work for other devices,
but i get the message: 'either "dev" is duplicate, or "XX:XX:XX:XX:XX:XX" is garbage'
Any ideas?

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HTC Dude said:
Also trying to get this, but no luck so far. I tried using busybox and terminal emulator using this command:
# ip link set eth0 XX:XX:XX:XX:XX:XX
which is supposed to work for other devices,
but i get the message: 'either "dev" is duplicate, or "XX:XX:XX:XX:XX:XX" is garbage'
Any ideas?
Click to expand...
Click to collapse
Never tried this b4, but are you making sure your taking eth0 down 1st? Cause if memory serves in linux, if you don't you can have wierd results.

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I take eth0 down first with
# iplink set eth0 down
then
# ip link set eth0 XX:XX:XX:XX:XX:XX
but i still get the error message
'either "dev" is duplicate, or "XX:XX:XX:XX:XX:XX" is garbage'

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HTC Dude said:
I take eth0 down first with
# iplink set eth0 down
then
# ip link set eth0 XX:XX:XX:XX:XX:XX
but i still get the error message
'either "dev" is duplicate, or "XX:XX:XX:XX:XX:XX" is garbage'
Click to expand...
Click to collapse
I hate to ask this, but I do have to...
Are you putting XX:XX:XX:XX:XX:XX or a valid address?

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johncmolyneux said:
I hate to ask this, but I do have to...
Are you putting XX:XX:XX:XX:XX:XX or a valid address?
Click to expand...
Click to collapse
LOL @ that. Yep, I'm using a valid address, so when it says that it's garbage, i really don't know what it means, because I'm using digits from 0 to 9 and letters from A to F.
Anyone tried this and succeded to spoof it somehow?

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HTC Dude said:
LOL @ that. Yep, I'm using a valid address, so when it says that it's garbage, i really don't know what it means, because I'm using digits from 0 to 9 and letters from A to F.
Anyone tried this and succeded to spoof it somehow?
Click to expand...
Click to collapse
Never tried or needed to, whats the purpose?
And does the errors occur when setting? or when bringing UP ?

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HTC Dude said:
LOL @ that. Yep, I'm using a valid address, so when it says that it's garbage, i really don't know what it means, because I'm using digits from 0 to 9 and letters from A to F.
Click to expand...
Click to collapse
Sorry mate. Had to ask

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johncmolyneux said:
Sorry mate. Had to ask
Click to expand...
Click to collapse
No problemo The errors occur when setting; it just won't allow me to assign a new address because of the said error. (FYI I obtained the information on how to do this from here, but this may be a device-specific problem)
Reasons for doing this can be many, but in my case it's a matter of privacy. I know google is storing al sorts of personal info using MAC addresses (see this for e.g.) and I can't remember having ever approved of that.
I think a small app that could help us change the MAC address on our device would come in really handy in these modern days, where everything is logged and supervised.

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hi,
i think that you are missing the word "address" in your command.
try these:
Code:
ip link set eth0 address XX:XX:XX:XX:XX:XX
ip link set eth0 addr XX:XX:XX:XX:XX:XX
ip link set dev eth0 address XX:XX:XX:XX:XX:XX
ip link set dev eth0 addr XX:XX:XX:XX:XX:XX
i guess that the syntax depends on the version of busybox that you are using.
i hope it helped.
greets

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velja_bg said:
hi,
i think that you are missing the word "address" in your command.
try these:
Code:
ip link set eth0 address XX:XX:XX:XX:XX:XX
ip link set eth0 addr XX:XX:XX:XX:XX:XX
ip link set dev eth0 address XX:XX:XX:XX:XX:XX
ip link set dev eth0 addr XX:XX:XX:XX:XX:XX
i guess that the syntax depends on the version of busybox that you are using.
i hope it helped.
greets
Click to expand...
Click to collapse
Thanks! This worked:
iplink set dev eth0 address XX:XX:XX:XX:XX:XX
I was able to spoof the MAC address and connect to the internet. However, the connection is reset only a few seconds after i connect, and the MAC address goes back to original.
No idea why this happens, i feel frustrated now. Thanks to y'all for your help anyway!

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Did you solve this I have the same problem.
/Mike

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When i try this i get "link object is unknown"
/mike

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I dont think anyone has answered this yet.
But for the Galaxy Tab you goto /efs/imei/ folder
and change .nvmac.info (open in text editor)
then reboot..
this changed my mac address for me

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dseo80 said:
I dont think anyone has answered this yet.
But for the Galaxy Tab you goto /efs/imei/ folder
and change .nvmac.info (open in text editor)
then reboot..
this changed my mac address for me
Click to expand...
Click to collapse
Hi dseo80:
When reading your note I thought that I finally found a way to spoof my MAC on my Galaxy Tap GT-P1000. I did as you said. I could not edit the file where it was and had to move it rename, edit and rename and move it back. After a reset unfortunatly I still have my original address.
I ham on Gigerbread stock version. What rom/version where you on when you did this?
Thanks for any hint

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Spoofing/changing MAC address = questionable from a legal POV (at best; illegal in many situations/jurisdictions). Expect this thread to be closed before you work out how to do it.

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Thread closed
While there might be legitimate reasons for spoofing a MAC address, there are lots of guides out there describing the process. We don't need to discuss it here on XDA.