GoKawiilNetBSD powers TCP satellite research at NASA Lewis and IPv6/IPsec work by KAME
NASA Lewis Research Center's Satellite Networks and Architectures Branch relies almost entirely on NetBSD to test proposed TCP protocol changes, including selective-acknowledgement retransmission and larger initial windows, for both satellite and terrestrial links. Separately, the KAME project used NetBSD as the base for implementing IPv6 and IPsec, with its stack merged into NetBSD-current in June 1999, while Germany's Institute for Media Communication built network access control tools on the OS.