 The Internet Research Task Force (IRTF) and the Internet Research Steering Group (IRSG), peer activities to the IETF and IESG under the general supervision of the IAB, focus on longer term research issues.Request for Comments (RFCs) are the main documentation for the work of the IAB, IESG, IETF, and IRTF.RFC 1, "Host Software", was written by Steve Crocker at UCLA in April 1969, well before the IETF was created.