modifying MAC address

[Eline Vanrykel]

Using 
	ifconfig eth0 down; ... ; ifconfig eth0 up 
in one line solved the problem.

Thanks a lot!


> On 10-nov.-2014, at 19:35, Isaac Dunham <ibid.ag at gmail.com> wrote:
> 
> On Mon, Nov 10, 2014 at 06:52:04PM +0100, Eline Vanrykel wrote:
>> Hi,
>> 
>> I’m using an android emulator and would like to change it’s MAC 
>> address. Busybox is installed and I try to modify it as follows:
>> 	adb shell
>> 	busybox ip link set dev eth0 addr 00:01:02:03:04:05
>> but this always results in the following error message: 
>> 	ip: SIOCSIFHWADDR: Device or resource busy
>> Okay, let’s solve this by putting the interface down before modification
>> 	busybox iplink set eth0 down 
>> However, my terminal gets stuck after this command. Killing the process 
>> and starting a new shell is also impossible, the shell just doesn’t react 
>> anymore. The only way to get access to the shell again is to restart the 
>> emulator altogether.
>> 
>> Does anyone have an idea how to solve this?
>> 
>> PS: I know that there are several different commands: ip link (with space), 
>> iplink (without space) or ifconfig to do the same thing. They all result in 
>> the same problem however.
> 
> adb works over network connections. If you kill the network connection,
> you will not be able to use the shell.
> 
> In theory, it *might* be possible to work around this by something like this:
> 
> ifconfig eth0 down; ... ; ifconfig eth0 up
> 
> (where ... stands for any commands that need to run while eth0 is down.)
> You would probably also need to kill adb from another terminal, 
> then run adb shell again. 
> 
> But really, I'd suggest reading the documentation for your emulator to
> see if the emulator allows configuring the MAC address.
> 
> HTH,
> Isaac Dunham

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