Before 1990, the Internet had been largely funded by government agencies including DARPA (the original and still existing at that time, ARPANET), the National Science Foundation (NSF) for NSFNET, various U.S. federal agency networks such as the Department of Energy and NASA, and with grants to various regional networks including NSYERNet. Many of the stake-holders of the Internet of the 1980s were military, industrial, or academic researchers who were largely satisfied with the then current model of usage and governance. However, appropriate commercial usage policies were debated on such mailing lists as com-priv (commercialization and privatization of the Internet), within semi-public forums such as the Internet Engineering Task Force (IETF), and included an investigation by the NSF's Inspector General staff. This included an intense debate on the "settlement model" of the Internet which was worldwide and both public and private in scope.