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Last active November 15, 2016 21:32
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systemd OUI service
Raw
oui.md

This unit file changes the OUI in the MAC addresses for enabled interfaces. It leaves the remaining bytes as is.

Copy oui@.service to /etc/systemd/system.

Enable it for each interface like this:

sudo systemctl enable oui@eth0
sudo systemctl enable oui@wlan0

Reboot then check your MAC addresses like this:

ifconfig | grep HWaddr

Tested with Raspbian Jessie (2016-09-23).

Most of the information I needed came from the Arch Wiki, but I had to play with the dependencies until it worked consistenly for both interfaces. (wlan0 would sometimes be broken after a reboot depending on the order in which the services ran.)

Raw
oui@.service
[Unit]
Description=Change OUI for %I
After=networking.service
Before=dhcpcd.service
[Service]
Type=oneshot
Environment="OUI=00:0c:59"
ExecStart=/bin/sh -c "ip link set dev %i address \"$OUI:$(ip link show %i | awk '/link\/ether/ {print substr($2, 10)}')\""
[Install]
WantedBy=multi-user.target
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