Air-Stream Wireless was able to assist the Elizabeth Amateur Radio Club with their display at the “Science at the Lakes” event held on Friday, 21 August. With access the to Air-Stream network, Paul Schulz (Air-Stream member and member of the Elizabeth Amatuer Radio Club), was able to set up an OpenVPN tunnel back to his home network, and provide internet to the local computer subnet. 
The photo on the right shows the dish and RouterBoard used to connect to the Air-Stream node at the Mawson Centre. Routing over the Air-Stream network was automatically configured with the BGP (Border Gateway Protocol) running on the provided RouterBoard system.
Some details about the set-up:
Local subnet configuration was provided by a laptop which was on both the Air-Stream network and a local subnet. It run a DHCP server for the local subnet along with the OpenVPN client and Network Address Translation (NAT) for traffic running through the tunnel. This laptop was configured as the default gateway for the local subnet and directed all packets destined for the greater internet through the OpenVPN tunnel. The remote OpenVPN server was also NAT’ing outgoing traffic to the Internet.
DNS was configured on the local subnet to use the DNS as configured for the remote home network.
The result: A linux laptop was able to access the Internet, but a Vista one had some issues (this may have been due to conflicts between wired and wireless interfaces). The tunnel configuration could do with a little more work to make it more robust but the concept has been shown to work.