Q: can I forward IPs without Server.app?

I want to forward a local IP range (the gateway that a virtual machine uses, Parallels Desktop 8 with host-only networking) to an IP (that a VPN connection of mine uses). By the time I figured out how it should (?) work using the modern tools of recent macs, I ran into an error suggesting that the feature might be missing from the non-server version of the latest update.

Shouldn't the following work?

sudo pfctl -v -T add 10.37.129.0 192.168.1.84 

If it should, is the following error suggesting that this (NAT, IP forwarding) requires Server.app now?! It sounds silly to pay $20 for this single feature, no real server use. (Simple Googling did not yield a definitive answer on this though.)

No ALTQ support in kernel ALTQ related functions disabled 

Btw, I hope the IP I see on the Networks Preference Pane (once connected) is the local address of the VPN connection, not the address I received on the remote network. Please let me know if the IP forwarding should not work, esp. you have a superior solution.

If you prefer answering this question on other forums, I asked for help here:

http://superuser.com/questions/670513/forwarding-a-vms-traffic-to-a-vpn-on-a-mac -possible-only-with-buying-server-a

http://apple.stackexchange.com/questions/108492/is-port-forwarding-possible-only -in-mavericks-server

http://forum.parallels.com/showthread.php?292587-directing-all-guest-traffic-thr ough-a-VPN-on-the-host