Error: "External IP #.#.#.#-#.#.#.# for NAT should belong to the sub-allocated IP range #.#.#.#-#.#.#.# of the edge gateway" when attempting to Edit or Create NAT Rules in VCD 10.6.1.1

Products

• VMware Cloud Director

Issue/Introduction

• User creates or edits a NAT rule from VMware Cloud Director (VCD) under, Resources > Cloud Resources > Edge Gateways > Selected Edge Gateway > Services > NAT > Rules:

 

• They hit the error in the UI:
  
  External IP #.#.#.#-#.#.#.# for NAT should belong to the sub-allocated IP range #.#.#.#-#.#.#.# of the edge gateway
  
  

Environment

• VMware Cloud Director 10.6.1.1

Cause

User is trying to create a NAT Rule in NSX for an IP address or range of IP addresses which do not exist on the list of Allocated IPs found under:

Provider Portal > Resources > Cloud Resources > Edge Gateways > Specified Edge Gateway > IP Management > IP Allocations

Resolution

User to ensure that all IPs associated with a NAT Rule from the NSX Edge are in an Allocated Range for VMware Cloud Director.

To change the IPs associated with an Edge, see the documentation:

Edit the IP Allocations of an NSX Edge Gateway in VMware Cloud Director.

Additional Information

if you receive the same error but these symptoms do not match, please refer to KB:

Error: "External IP xx.xx.xx.xx-xx.xx.xx.xx for NAT should belong to the sub-allocated IP range xx.xx.xx.xx-xx.xx.xx.xx of the edge gateway" when attempting to Edit or Create NAT Rules in Cloud Director (394641)