Cisco Systems, Inc. Cisco Systems, Inc. Broadcom Juniper Networks Huawei Technologies This document defines the Post-Stack MPLS Network Action (MNA) solution for carrying Network Actions and Ancillary Data after the MPLS label stack, based on the In-Stack MNA solution defined in "MPLS Network Action (MNA) Sub-Stack Solution." MPLS Network Actions can be used to influence packet forwarding decisions, carry additional Operations, Administration, and Maintenance information in the MPLS packet, or perform user-defined operations. This solution document addresses the Post-Stack network action and Post-Stack data-specific requirements found in RFC 9613. This document follows the framework specified in RFC 9789.