[Lawrie]

<snip>
What MobileSheets does is save the MAC address of the leader tablet, and if the leader changes IP addresses, MobileSheets will get the broadcast message with a different MAC address, and MobileSheets will recognize that the device is the same as the leader it was connected to, and will reconnect to that IP address instead.
<snip>

Huh?  A change of IP address doesn't change the MAC address.  

I suspect there's a small typo and the italicized part of the quote should have read "different IP address".