Cisco Catalyst SD-WAN Troubleshooting Guide

Unified Debug Condition

Updated: September 28, 2026

Introduces the unified debug condition feature for matching both IPv4 and IPv6 traffic over MPLS networks and provides configuration guidance for Cisco IOS XE SD-WAN devices.

This feature introduces a debug condition to identify and resolve issues related to matching IPv4 and IPv6 traffic over an MPLS network.

Table 1. Feature history
Feature Name	Release Information	Description
Unified Debug Condition To Match IPv4 and IPv6 Over MPLS	Cisco IOS XE Catalyst SD-WAN Release 17.11.1a	This feature introduces a debug condition to identify and resolve issues related to matching IPv4 and IPv6 traffic over an MPLS network.

Unified debug conditions

Describes the unified debug condition capability for IPv4 and IPv6 traffic over MPLS packets on Cisco IOS XE Catalyst SD-WAN devices.

Restrictions for unified debug condition

Outlines the limitations when using debug conditions for IPv4 and IPv6 traffic over MPLS networks.

Use cases for unified debug conditions

Describes scenarios where unified debug conditions help match IPv4 and IPv6 traffic over MPLS networks.

Debug to match IPv4 and IPv6 traffic over MPLS using the CLI

Configure debug conditions to match IPv4 and IPv6 traffic over MPLS networks using various filtering conditions and label specifications.

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