I'm now using the Lusca IPv6 branch for browsing both IPv4 and IPv6 sites.
There's a bunch of little things to update and test, including testing the neighbor selection, peer and ICP code. It's still not yet doing transparent interception or TPROXY - that'll be among the last thing to work on. Finally, there's a bunch of connection timeout handling code which currently is being ignored - there's no convenient place to attach a timeout handler now since the file descriptor isn't created up front; it's created only once the DNS resolution is complete.
My main focus at the moment is testing and verifying the peer, neighbor selection and ICP code out.
But yes, it is actually working!