Cannot reach Horizon from outside the specified public subnet

My 5.0.1 prerelease build deployed well. However, I have a few problems with it.

One is that I cannot reach Horizon from outside the public subnet it's in. My public subnet is 22-bit, which may be the issue I guess. Fuel shows me the URL to Horizon with an IP that I think comes from HAProxy. Can anyone help me reach this IP from outside the subnet that it's in? All of our workstations are in a different subnet than the OpenStack cluster. Until I can open Horizon to them, my cluster isn't really production ready.

Thanks,
Joshua