Thanks to masquerade entire subnetwork can access Internet using single routable IP address. All the computers constituting a subnetwork appear in Internet under the same address, but router is able to recognize, which one incoming data should be directed to, so no conflicts arise.

Any addresses from non-routable pool should be allocated to the computers in a subnetwork, e.g. 192.168.xx or 10.x.x.x, and Tahoe router should be configured as a gateway.