NB: Some NICs do not support EEPROM write. Mac MACSpoof is a Mac utility that allows the user to change the MAC address of the network interfaces of your Mac (Ethernet, Wi-Fi and so on) with any. When you update the NIC EEPROM in this manner, the MAC address will persist across host reboots. Another way you can find the IP address is by clicking the Apple icon > System Preferences > Network. Then you can see the MAC address (under Interface Name) and the IP address. For example, the e1000 line of NICs uses vendor_id and the device_id (both of which can be retrieved via lspci -n) One way is to press and hold the Option key on your keyboard and click the Wi-Fi icon () in the top right-hand corner. Here $MAGIC_NUMBER is dependent on the NIC firmware. If you would like more granular control over the EEPROM contents, the -E argument has several sub-arguments, of the form $ ethtool -E eth0 magic=$MAGIC_NUMBER offset=0x0 length=0x1 value=0xff

It is possible to read and write to the network interface card EEPROM using the ethtool -e $DEVICE_NAME (read) and ethtool -E $DEVICE_NAME < $EEPROM_BACKUP.bin (write). EthtoolĮthtool comes pre-installed on many stock distributions of Linux, but can also be installed from your package manager of choice if necessary. It turns out the answer is yes, and the tool to do so is called ethtool. Here are some more answers to your questions about MAC addresses.It is well know that through the ip and ifconfig commands it is possible to change a MAC address temporarily, meaning the change will not persist across host reboots.īut what if you would like to change your MAC address in a more permanent fashion? Is there a way to, through software, permanently change your network interface card's MAC address? So, whenever you need to or want to change your Mac address in macOS, you’ll type one of the above commands in the Terminal application, and you’re ready to go.Īfter changing your Mac address, you’ll probably also want to restart your Wi-Fi connection to avoid network issues. The Mac address reverts to the default when you restart your Mac computer. The x’s represent the new Mac address created above. Sudo ifconfig en0 ether xx:xx:xx:xx:xx:xx

You will now see a hexadecimal number that appears like this: 1a:22:a1:a1:aa:a1.

Openssl rand –he圆 | sed ‘s/(.)/1:/g s/.$//’ | xargs sudo ifconfig en0 ether

Once you’ve opened the Terminal app, type this in the terminal:.

The terminal will launch, and you can start the process of changing your MAC address.Open Finder on your Mac and click Applications.

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