This is an announcement of an IETF-wide Call for Comment on draft-trammell-wire-image-04. The document is being considered for publication as an Informational RFC within the IAB stream, and is available for inspection at: <https://datatracker.ietf.org/doc/draft-trammell-wire-image/> The Call for Comment will last until 2018-10-03. Please send comments to architecture-discuss@ietf.org and iab@iab.org. Abstract This document defines the wire image, an abstraction of the information available to an on-path non-participant in a networking protocol. This abstraction is intended to shed light on the implications on increased encryption has for network functions that use the wire image.