Randomize MAC address for Macbook Pro's WiFi card to bypass traffic limitation imposed by some hotels

randomize-mac-wifi.sh

#!/usr/bin/env bash

# Randomize MAC address for the WiFi cards on Macbook Pro
#
# Most of the code comes from here:
#		https://apple.stackexchange.com/questions/151986/change-mac-address-in-os-x-yosemite
# 

echo "Randomizing WiFi MAC address...";
echo;
echo "	Current settings:		`sudo ifconfig en0 ether | grep ether | cut -c 8-`";
RANDOM_MAC="`openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/./0/2; s/.$//'`";
echo "	New generated MAC:		$RANDOM_MAC";
echo -n "	Setting new MAC address..."
sudo ifconfig en0 ether $RANDOM_MAC
echo "	done"
echo -n "	Force new hardware detection..."
networksetup -detectnewhardware
echo "	done"
echo "	MAC address after the change:	`sudo ifconfig en0 ether | grep ether | cut -c 8-`"