%% You should probably cite draft-ietf-intarea-tunnels instead of this I-D. @techreport{touch-intarea-tunnels-01, number = {draft-touch-intarea-tunnels-01}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-touch-intarea-tunnels/01/}, author = {Dr. Joseph D. Touch and Mark Townsley}, title = {{Tunnels in the Internet Architecture}}, pagetotal = 22, year = 2010, month = mar, day = 5, abstract = {This document discusses the role of tunnels in the Internet architecture. It explains their relationship to existing protocol layers, and the challenges in supporting tunneling.}, }