%% You should probably cite rfc8586 instead of this I-D. @techreport{ietf-httpbis-cdn-loop-01, number = {draft-ietf-httpbis-cdn-loop-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-ietf-httpbis-cdn-loop/01/}, author = {Stephen Ludin and Mark Nottingham and Nick Sullivan}, title = {{CDN Loop Prevention}}, pagetotal = 6, year = 2018, month = oct, day = 23, abstract = {This specification defines the CDN-Loop request header field for HTTP.}, }