If you really want to screw with these set your MAC address to 00:00:00:00:00:00

It’s an illegal address, but most equipment will take it because test devices occasionally come from the factory with that MAC. But higher level stuff might barf on it because it’s technically illegal.

▲ totetsu 17 hours ago | parent | next [-]

I tired this once and it bypassed the captive portal and time limits entirely

▲ varenc 12 hours ago | parent | prev [-]

alas, macOS refuses:

     $ sudo ifconfig en0 ether 00:00:00:00:00:01
    ifconfig: ioctl (SIOCAIFADDR): Can't assign requested address

edit: but this worked on my external NIC! Network wasn't happy though and DHCP didn't work. Ubiquiti had a funny note about this MAC: "Officially Xerox, but 0:0:0:0:0:0 is more common"

	▲	mannyv 5 minutes ago \| parent [-]
		If you stash the IP/netmask/router IP you might be able to get it to work by setting a static IP on the connection with a 0 MAC address. As always, ymmv. On some equipment this may cause a broadcast storm, depending on how they implement things. Cisco equipment with some configs will send a packet to all the ports if it receives a packet and can't figure out where it's supposed to go.