Cisco Systems, Inc. Huawei China Mobile University of Cincinnati The Simple Two-Way Active Measurement Protocol (STAMP) and its optional extensions can be used for Edge-to-Edge (E2E) active measurements. In Situ Operations, Administration, and Maintenance (IOAM) data fields can be used for recording and collecting Hop-by- Hop (HBH) and E2E operational and telemetry information. This document extends STAMP to reflect IPv4/IPv6 headers as well as IPv6 extension headers for HBH and E2E active measurements, for example, using the IOAM data fields.