Gateway VDR not replying to ICMPv6 Request

Products

• VMware NSX

Issue/Introduction

This article is for when virtual machines are unable to ping gateway vdr with ICMPv6

Symptoms:
Virtual Machines are unable to ping gateway vdr with ICMPv6

Environment

VMware NSX-T Data Center 3.x
VMware NSX-T Data Center

Cause

In NSX-T 3.0.x, the extension header Hop-by-Hop is not supported yet.

To verify it's the same issue, do a packet capture at VDR switchport.

Check:
1: The Neighbor is Established
2: The ICMPv6 Request from Virtual Machines containing the extension header Hop-by-Hop (HBH)

Resolution

More extension headers, like Hop-by-Hop, Destination, and Routing will be supported in the 3.1.x release.

Workaround:
Upgrade to NSX-T 3.1.x or later

Additional Information

Impact/Risks:
Gateway VDR not replying to ICMPv6 Request