Set The First Octet - Failed To Change Mac Address For Wireless Network Connection

Common invalid first octets include:

Check if your specific (e.g., Intel, Realtek) has known hardware locks. Common invalid first octets include: Check if your

SMAC also validates the first octet. Enter a MAC address beginning with 02 , 06 , 0A , etc., then click Update MAC. Reboot afterward. Reboot afterward

| First Octet (hex) | Binary | U/L bit | Valid for spoofing? | |------------------|--------|---------|----------------------| | 00 | 00000000 | 0 | ❌ No – universal | | 02 | 00000010 | 1 | ✅ Yes | | 06 | 00000110 | 1 | ✅ Yes | | 0A | 00001010 | 1 | ✅ Yes | | 12 | 00010010 | 1 | ✅ Yes | | FE | 11111110 | 1 | ✅ Yes (but caution: multicast if bit0=1) | This is done by modifying the first octet

To resolve this error, you must ensure that the MAC address you are trying to assign is a . This is done by modifying the first octet of your desired MAC address.

A standard MAC address consists of 12 hexadecimal characters, usually separated by colons or hyphens (e.g., 00:1A:2B:3C:4D:5E ).