To hack your MAC address, depending on platform, you may need to use Net::Pcap and the send methods. I'm thinking something similar to Python's scapy (http://www.secdev.org/projects/scapy/).

Fortunately, I wrote something based on the Net::Frame modules. You can find it here:

EDIT (20170918): fixed old links, now point to GitHub

UPDATE:

Simple as:

VinsWorldcomC:\Users\VinsWorldcom\tmp\ppc> ppc -i "Wireless Network Co
+nnection"
Welcome to Perl Packet Crafter (PPC)
Version:  1.02

Wireless Network Connection

ppc> $r = srp (packet (ETHER(dst=>'00:11:22:33:44:55'), IPv4, UDP));
Sent => [Receive Timeout]


ppc>
[download]

Receive timeout due to there being no 00:11:22:33:44:55 MAC address on my network.