Creating Device configuration snippets
[CREATED] dut: initial,ospf
[CREATED] xgr: initial,ospf
[CREATED] xp: initial,ospf
Config Deploying device configurations
 [INFO] Executing initial configuration for node dut (namespace clab-
          ml-17-dut)
 [INFO] Executing initial configuration for node xgr
 [INFO] Executing initial configuration for node xp
 [INFO] Executing ospf configuration for node xp
 [INFO] Executing ospf configuration for node xgr

Results of configuration script deployments
================================================================================
dut              Script:  initial
xgr              Script:  initial,ospf
xp               Script:  initial,ospf


This lab tests OSPF graceful restart helper behavior. The device under test
should retain the FRR probe loopback route during a planned OSPF restart.

FRR's `graceful-restart prepare` is one-shot: it floods Grace LSAs and writes
restart state to /var/lib/frr/ospf6d.json. The probe then kills ospf6d to
simulate a planned restart. gr_resume clears that state and restarts ospf6d so
a subsequent `netlab validate` run can call prepare again.