I am currently working on the Click modular router . We have recently added multithreading support to Click. See our usenix 2001 paper . Aside from Click, I also work on Span, an energy efficient coordination algorithm for multi-hop wireless networks. In a Span network, only some of the nodes has to stay awake to forward packets.
Span maintains capacity and connectivity.
I also worked on LBFS, a low bandwidth file system that will become part of SFS . A few years back, I worked on the Exokernel project. Benjie Chen and Robert Morris. Flexible Control of Parallelism in a Multiprocessor PC Router . Eddie Kohler, Robert Morris, Benjie Chen, John Jannotti, and M. Frans Kaashoek.