Why can't I change my MAC address to this address?

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Why can't I spoof my wifi card's MAC address to 1F:2E:3D:4C:5B:6A. Is that address invalid?



root@:~# ifconfig wlan0 down
root@:~# ifconfig wlan0 hw ether 1f:2e:3d:4c:5b:6a
SIOCSIFHWADDR: Cannot assign requested address



networking wifi network-interface networkmanager




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    up vote
    2
    down vote

    favorite












    Why can't I spoof my wifi card's MAC address to 1F:2E:3D:4C:5B:6A. Is that address invalid?



    root@:~# ifconfig wlan0 down
    root@:~# ifconfig wlan0 hw ether 1f:2e:3d:4c:5b:6a
    SIOCSIFHWADDR: Cannot assign requested address



    networking wifi network-interface networkmanager




    share|improve this question























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      Why can't I spoof my wifi card's MAC address to 1F:2E:3D:4C:5B:6A. Is that address invalid?



      root@:~# ifconfig wlan0 down
      root@:~# ifconfig wlan0 hw ether 1f:2e:3d:4c:5b:6a
      SIOCSIFHWADDR: Cannot assign requested address



      networking wifi network-interface networkmanager




      share|improve this question













      Why can't I spoof my wifi card's MAC address to 1F:2E:3D:4C:5B:6A. Is that address invalid?



      root@:~# ifconfig wlan0 down
      root@:~# ifconfig wlan0 hw ether 1f:2e:3d:4c:5b:6a
      SIOCSIFHWADDR: Cannot assign requested address




      networking wifi network-interface networkmanager





      share|improve this question












      share|improve this question




      share|improve this question








      edited May 3 at 14:02









      Kusalananda

      102k13199316




      102k13199316









      asked May 3 at 14:00









      user825347

      132




      132




















          1 Answer
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          As explained in this AskUbuntu question/answer, a unicast MAC address' first octet (your 1f) has to be even.



          Since 1f (31) is not even, you can't assign it.






          share|improve this answer





















          • Ok. I'm sorry for it. I'm new in here.
            – user825347
            May 3 at 14:31










          • @user825347 No worries :-)
            – Kusalananda
            May 3 at 14:35










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          1 Answer
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          active

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          1 Answer
          1






          active

          oldest

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          active

          oldest

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          active

          oldest

          votes








          up vote
          5
          down vote



          accepted










          As explained in this AskUbuntu question/answer, a unicast MAC address' first octet (your 1f) has to be even.



          Since 1f (31) is not even, you can't assign it.






          share|improve this answer





















          • Ok. I'm sorry for it. I'm new in here.
            – user825347
            May 3 at 14:31










          • @user825347 No worries :-)
            – Kusalananda
            May 3 at 14:35














          up vote
          5
          down vote



          accepted










          As explained in this AskUbuntu question/answer, a unicast MAC address' first octet (your 1f) has to be even.



          Since 1f (31) is not even, you can't assign it.






          share|improve this answer





















          • Ok. I'm sorry for it. I'm new in here.
            – user825347
            May 3 at 14:31










          • @user825347 No worries :-)
            – Kusalananda
            May 3 at 14:35












          up vote
          5
          down vote



          accepted







          up vote
          5
          down vote



          accepted






          As explained in this AskUbuntu question/answer, a unicast MAC address' first octet (your 1f) has to be even.



          Since 1f (31) is not even, you can't assign it.






          share|improve this answer













          As explained in this AskUbuntu question/answer, a unicast MAC address' first octet (your 1f) has to be even.



          Since 1f (31) is not even, you can't assign it.







          share|improve this answer













          share|improve this answer



          share|improve this answer











          answered May 3 at 14:06









          Kusalananda

          102k13199316




          102k13199316











          • Ok. I'm sorry for it. I'm new in here.
            – user825347
            May 3 at 14:31










          • @user825347 No worries :-)
            – Kusalananda
            May 3 at 14:35
















          • Ok. I'm sorry for it. I'm new in here.
            – user825347
            May 3 at 14:31










          • @user825347 No worries :-)
            – Kusalananda
            May 3 at 14:35















          Ok. I'm sorry for it. I'm new in here.
          – user825347
          May 3 at 14:31




          Ok. I'm sorry for it. I'm new in here.
          – user825347
          May 3 at 14:31












          @user825347 No worries :-)
          – Kusalananda
          May 3 at 14:35




          @user825347 No worries :-)
          – Kusalananda
          May 3 at 14:35












           

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