{"draft":"draft-iab-use-it-or-lose-it-04","doc_id":"RFC9170","title":"Long-Term Viability of Protocol Extension Mechanisms","authors":["M. Thomson","T. Pauly"],"format":["HTML","TEXT","PDF","XML"],"page_count":"17","pub_status":"INFORMATIONAL","status":"INFORMATIONAL","source":"IAB","abstract":"The ability to change protocols depends on exercising the extension\r\nand version-negotiation mechanisms that support change.  This\r\ndocument explores how regular use of new protocol features can ensure\r\nthat it remains possible to deploy changes to a protocol. Examples\r\nare given where lack of use caused changes to be more difficult or\r\ncostly.","pub_date":"December 2021","keywords":["Extensions","versions","grease"],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC9170","errata_url":null}