Random MAC but it should have first 10 characters same for 2 SSIDs

[RSHARM]

I use random MAC for SSID and want to use similar MAC with only last 1 or 2 characters different.

Also how to reset the Random MAC via command ?

[frollic]

search is a k00l feature ...

Wifi Feature Request: Random Mac Address for AP

Hi, I want to suggest a feature for AP with OpenWRT Firmware. The Feature that I want to suggest is the Random Mac (Toggle On or Off). This said feature is to prevent some Wifi Deather Jammer. that can sabotage some Deployed AP. Every time the AP reboots. the wifi mac will be changed so that the information of the wifi will be changed and the jammed wifi will be free again.

[JustAnotherEndUser]

I believe this solution by @pavelgl in another post could be modified to allow you to have fixed partial octets for the first part of the MACs, then use variables to randomize the remaining octets for your wireless interfaces. Example: AA:BB:11:22:xx;xx
You could incorporate it into startup script, then use cron to schedule a nightly reboot so it changes daily. ( a scheduled /sbin/reboot )

Generate a new random WAN MAC address at every boot

I would make it much simpler without using macchanger at all. Create a device (if it does not already exist). config device option name 'eth0.2' option macaddr '11:22:33:44:55:66' Insert the following into /etc/rc.local (change the device number accordingly). uci set network.@device[0].macaddr=$(dd if=/dev/urandom bs=1024 count=1 2>/dev/null | md5sum | sed -e 's/^\(.\)\(..\)\(..\)\(..\)\(..\)\(..\).*$/\1a:\2:\3:\4:\5:\6/') ifup wan This will assign to wan a random MAC in …

[RSHARM]

I want to use random MAC but the random MAC used should have first 10 characters same.
@frollic @JustAnotherEndUser

[frollic]

So generate the 1st 10 chars only once ?
The rest +1, +2, +n, depending on what you need...

[JustAnotherEndUser]

Here is another possible option based on a similar solution by @bigsmile

Wifi Feature Request: Random Mac Address for AP

Then start testing it .. rc.local #!/bin/sh random_mac(){ printf "%012x" $(( 0x$(hexdump -n6 -ve '/1 "%02X"' /dev/urandom) & 0xFCFFFFFFFFFF )) | sed 's/../:&/g;s/^://';} uci set network.wan.macaddr $(random_mac) uci commit edit: it might need a commit at the end

You could modify that solution to look like this:

#!/bin/sh
random_mac(){ printf "%02x" $(( 0x$(hexdump -n6 -ve '/1 "%02X"' /dev/urandom) & 0xFF )) | sed 's/../:&/g;s/^://';}
uci set network.wan.macaddr 11:22:33:44:55:$(random_mac)
uci commit

With the modification shown above, the 11.22.33.44.55: are fixed ( substitute those numbers with whatever base MAC you want) and the $(random_mac) is the variable of the random two characters for the last octet.
The random characters are generated from the printf "%02x"
The "2x" part is telling it the number of characters to generate.

You may want to consider making more than one octet random though. I would recommend having the first 3 octets fixed, and the last 3 random. That would look like this:

#!/bin/sh
random_mac(){ printf "%06x" $(( 0x$(hexdump -n6 -ve '/1 "%02X"' /dev/urandom) & 0xFFFFFF )) | sed 's/../:&/g;s/^://';}
uci set network.wan.macaddr 11:22:33:$(random_mac)
uci commit