bbsim restarted when olt device is disabled and deleted using voltctl post grpc restart through bbsimctl

time="2021-03-17T15:58:17Z" level=info msg="DHCP State machine completed" IntfId=0 OnuId=1 OnuSn=BBSM000a0001 ServiceName=hsia module=DHCP
time="2021-03-17T15:58:43Z" level=info msg="Received request to restart Openolt gRPC Server in 5 seconds" module=GrpcApiServer
time="2021-03-17T15:58:43Z" level=warning msg="Stopping OLT gRPC server" module=OLT oltId=BBSIM_OLT_10
time="2021-03-17T15:58:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T15:58:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T15:58:48Z" level=debug msg="OLT listening on :50060" module=OLT
time="2021-03-17T15:58:48Z" level=info msg="Openolt gRPC Server restarted after 5 seconds" module=GrpcApiServertime="2021-03-17T15:59:04Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T15:59:04Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLTtime="2021-03-17T15:59:24Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T15:59:24Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLTtime="2021-03-17T15:59:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T15:59:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:00:04Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:00:04Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:00:24Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:00:24Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLTtime="2021-03-17T16:00:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:00:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLTtime="2021-03-17T16:01:04Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:01:04Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:01:24Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:01:24Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:01:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:01:44Z" level=error msg="Failed to send PortStats: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:01:59Z" level=info msg="Disabling OLT" module=OLT oltId=10
time="2021-03-17T16:01:59Z" level=debug msg="Changing PON Port OperState from up to down" ID=0 module=OLT
time="2021-03-17T16:01:59Z" level=error msg="Failed to send Indication_IntfInd: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:01:59Z" level=debug msg="Changing ONU InternalState from enabled to pon_disabled" IntfId=0 OnuId=1 OnuSn=BBSM000a0001 module=ONU
time="2021-03-17T16:01:59Z" level=debug msg="Changing OLT InternalState from enabled to disabled" module=OLT
time="2021-03-17T16:01:59Z" level=debug msg="Changing OLT OperState from up to down" module=OLT
time="2021-03-17T16:01:59Z" level=error msg="Failed to send Indication_OltInd: rpc error: code = Unavailable desc = transport is closing" module=OLT
time="2021-03-17T16:02:00Z" level=debug msg="OLT receives FlowRemove" FlowId=3531616319679945364 FlowType=upstream module=OLT
time="2021-03-17T16:02:00Z" level=debug msg="ONU receives FlowRemove" FlowId=3531616319679945364 FlowType=upstream IntfId=0 OnuId=1 SerialNumber=BBSM000a0001 module=ONU
time="2021-03-17T16:02:08Z" level=info msg="Shutting down" module=OLT oltId=10
time="2021-03-17T16:02:08Z" level=info msg="Simulating OLT restart... (60s)" module=OLT oltId=10
time="2021-03-17T16:02:08Z" level=debug msg="Changing OLT InternalState from disabled to deleted" module=OLT
time="2021-03-17T16:02:09Z" level=debug msg="Changing ONU OperState from up to down" ID=1 module=ONU
time="2021-03-17T16:02:09Z" level=debug msg="Changing Service.InternalState InternalState from initialized to disabled" IntfId=0 Name=hsia OnuId=1 OnuSn=BBSM000a0001 module=SERVICE
time="2021-03-17T16:02:09Z" level=debug msg="Changing ONU InternalState from pon_disabled to disabled" IntfId=0 OnuId=1 OnuSn=BBSM000a0001 module=ONU
time="2021-03-17T16:02:09Z" level=debug msg="Stop sending port stats"
time="2021-03-17T16:02:09Z" level=debug msg="OLT Indication processing canceled via context" module=OLT
time="2021-03-17T16:02:09Z" level=warning msg="Stopped handling OLT Indication Channel" module=OLT
time="2021-03-17T16:02:09Z" level=debug msg="Done Listening on Service Packet Channel" GemPortId=1024 IntfId=0 Name=hsia OnuId=1 OnuSn=BBSM000a0001 module=SERVICE
time="2021-03-17T16:02:09Z" level=debug msg="Done Listening on Service Channel" GemPortId=1024 IntfId=0 Name=hsia OnuId=1 OnuSn=BBSM000a0001 module=SERVICE
time="2021-03-17T16:02:09Z" level=error msg="Failed to send Indication_OnuInd: rpc error: code = Unavailable desc = transport is closing"
time="2021-03-17T16:02:09Z" level=debug msg="Stopped handling ONU Indication Channel" module=ONU onuID=1 onuSN=BBSM000a0001time="2021-03-17T16:03:09Z" level=fatal msg="OLT failed to listen: listen tcp :50060: bind: address already in use" module=OLT
hardik@hardik-test-station:~$