Hello mweisberg,
Thank you for your comments and welcome to the community!
The reason we are unable to offer this type of network on a Mac computer is that a Gateway network requires the Operating System to support Network Bridging. Currently Mac OSX does not support Network Bridging so we have no way of implementing Gateway networks on Mac OSX from a design standpoint.
I hope this helps to clarify.
Regards,
Erik Elsom-Van Vogt
Customer Support Representative
LogMeIn, Inc.