Run the command set protocols ospf6 graceful-restart helper planned-only to enable the OSPFv3 Graceful Restart (GR) Helper capability, specifying that the device only supports to support only Planned Graceful Restart. By default, the device supports both Planned Graceful Restart and Unplanned Graceful Restart. Optional parameter vrf can be used to specify a VRF, if no VRF is specified the command takes effect on the default VRF.
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