Definition of Done: Please mark each item below with ( / ) if completed or ( x ) if incomplete: ( ) The acceptance criteria defined below are met. Given NetworkManager is configured to share IPv6 connectivity via prefix delegation,  When the system administrator needs to configure specific prefix delegation options such as: Explicitly enabling/disabling prefix delegation with prefix-delegation.enable Specifying the subnet ID for prefixes larger than /64 with prefix-delegation.subnet-id Controlling address assignment from the delegated prefix with prefix-delegation.assign Then NetworkManager should properly implement and honor these configuration options.  Definition of Done: The implementation meets the acceptance criteria Integration tests are written and pass The fix is part of a downstream build attached to an errata   ( ) Code changes are included in a downstream build attached to an errata. ( ) All required testing (manual and/or automated) passes successfully. ( ) Related documentation updates (if applicable) have been completed.

.NetworkManager now supports fixed subnet IDs for downstream interfaces when using IPv6 prefix delegation With this enhancement, you can now specify a fixed subnet ID for downstream interfaces in NetworkManager when you use IPv6 prefix delegation. In previous releases, when you rebooted the system, the subnet ID for these interfaces could change. With a fixed subnet ID, IPv6 addresses assigned to devices in the downstream network do not change when you reboot the RHEL host.