Alternatively, disconnect from the wifi, use this command and reconnect:

sudo ifconfig en0 ether 02:11:22:33:44:55

Just ran into this on icelandair.

pcl a day ago | parent [-]

That’ll buy you one new turn of the crank; you’ll need to change numbers once every expiration period.

	▲	glerk a day ago \| parent [-]
		Pretty sure the electron app has the same limitation (popover notification says “join the network again for free wifi”, besides you wouldn’t be able to change the mac address if the network interface were actively in use)