2

So I used macchanger to spoof my mac address with these commands:

sudo ifconfig (interface) down
sudo macchanger -m (mac_address) (interface)
sudo ifconfig (interface) up

If I stop here I will not be able to connect to the internet.

So I restart network-manager: 

sudo service network-manager restart

A this point after the service restart is done the mac address is set to default meaning the real mac address.

I think the issue is relevant to ipv6 because I disabled ipv6 from boot loader /etc/default/grub:

GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 quiet splash"

Following guidance below that I should use

sudo macchanger -r (interface) or sudo machchanger -a (interface)

I tried all commands from -A random to -M custom mac address, again no access to the internet if I dont restart the service network-manager.

I'm using the network adapter awus036nha

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5
  • Keep in mind once you successfully connect that your connection might be very unstable if another active user is on that subnet with that mac address. If you are doing something like bypassing a public wifi subscription validator or something like that, you might need to hop around several mac addresses until you find one that is not active.
    – S.C.
    Commented Aug 3, 2016 at 2:26
  • I understand and no im not trying to do that so I dont think thats the issue
    – qstion6006
    Commented Aug 4, 2016 at 4:58
  • You must restart the service networking or reload the interface with ifdown/ifup <interface>
    – Sorcha
    Commented Aug 4, 2016 at 7:56
  • @Sorcha yes, but the thing is as I said above that when I restart the network manager everything is set back to normal mac address,ipv6 configuration and such. I think the issue is that Im using a wireless adapter to connect to my access point and the communication between the ap and the adapter is lost because of changing the mac address
    – qstion6006
    Commented Aug 4, 2016 at 17:15
  • NetworkManager has its own built-in functionality for spoofing MAC addresses. It's not necessary to use macchanger.
    – Michael Hampton
    Commented Aug 6, 2016 at 4:32

3 Answers 3

Reset to default
3

Try sudo macchanger -r (interface) or sudo machchanger -a (interface)

While interface is down, then bring it back up again.

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1
  • @wireghoul thanks for the answer still the same issue. I tried all these commands from -A random to -M custom mac address, again no access to the internet if I dont restart the service network-manager. Im using the network adapter awus036nha
    – qstion6006
    Commented Aug 4, 2016 at 17:16
0

You've perhaps got your card stuck in rfmon mode, or something similar. Disable gnome/kde's wifi managers before using macchanger.

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0

I had the same issue as you - I also had disabled ipv6 via the grub config. I undid the changes, updated the grub config, rebooted, and I am now able to change my mac addy again with macchanger.

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