net/tcpproxy still active?

So, I'm looking for a simple proxy. I have used simpleproxy in the past,
but it doesn’t support IPv6 currently.  In looking at options, I see
net/tcpproxy, but I can’t tell if that project is still alive at all.
https://www.spreadspace.org/tcpproxy/ exists an supplies tarballs, but
has no good information and the referenced git repo seems offline. 

Is this project active, or historic?  Does anyone know of another simple
TCP proxy on FreeBSD that supports IPv6 connectivity?

Thank you.

           - Chris