Etherboot Project participated in Google Summer of Code in 2006. Google generously sponsored 4 students to work on the following projects:
Derek Pryor worked on adding secure connections and data integrity checking to gPXE so that the network boot process can be trusted.
Nikhil Chandru Rao worked on adding IPv6 support to gPXE.
Fredrik Hultin worked on a command-line for gPXE allowing users to interactively control the boot process.