For whatever it's worth, the Crossbow technology remains at the core of our Triton container stack[1] -- and we have extended it significantly by adding VXLAN and virtual layer 2 networking.[2][3] One of the comments we have heard from many early Triton adopters is that they enjoy having IP addresses, networking stacks and bare-metal performance. ;)
[1] https://www.joyent.com/blog/triton-docker-and-the-best-of-al...
[2] http://fingolfin.org/illumos/talks/sdn.pdf
[3] https://www.youtube.com/watch?v=mLvi3nPNqiQ&list=PLH8r-Scm3-...