This issue is resolved in VMware NSX Data Center for vSphere 6.4.6, available at
VMware Downloads.
Workaround:
To manually set the MTU on the trunk interface, access the
Advanced tab from the interface edition menu of the Edge.
Note: This is applicable for creation and edition.
- Navigate to Networking and Security.
- Select NSX Edges.
- Double click the affected Edge.
- Navigate to Manage.
- Navigate to Settings.
- Navigate to Interfaces.
- Select the Trunk Interface.
- Click Edit.
- Navigate to Advanced tab.
- Change the MTU setting from 1500 to 1600 (or intended value).
- Click Save.
Note: The configuration change is immediate. No restart of the Edge is required.