Does FreeBSD have the ability to properly forward UDP traffic ?

[None Secure]

I would like very much to use sshuttle for an informal VPN.

However, sshuttle sets up a lot of complexity in order to route DNS requests over the ssh tunnel ... it uses divert rules for dns traffic, and I don't think they even tested it because it fails to start or utilize natd.

The stated reason by sshuttle project is that you can't just forward UDP traffic properly with BSD, like you can with linux - they say it doesn't keep track of port numbers or connections properly.

Is this true ?

Or is it possible to properly forward UDP traffic with ipfw rules, and not use natd/divert ?

Thanks.