With BC config, after killing cloud-event-process process on the sidecar of linuxptp-daemon pod, clock class is missing and would not recover unless restarting the linuxptp-daemon pod

linuxptp-daemon container log:

I0209 16:51:52.163610 1291366 clock_class_log.go:22] ptp4l[1770655912]:[ptp4l.0.config] CLOCK_CLASS_CHANGE 6
E0209 16:51:52.163704 1291366 clock_class_log.go:29] failed to write class change event to socket: write unix @->/cloud-native/events.sock: write: broken pipe

4.22

100%

1.Run ptp and verify clock class with event enabled 

2.verify localhost9091:metrics  for clock class , should be 6  

$ oc exec -it ds/linuxptp-daemon  -n openshift-ptp -c linuxptp-daemon-container -- curl -s localhost:9091/metrics | grep clock_class

3.kill side car (daemon should be still running ) 
  
$ oc exec ds/linuxptp-daemon -c cloud-event-proxy -n openshift-ptp -- sh -c "kill -9 \$(pgrep -f ^./cloud-event-proxy)"

4. wait for the side car to recover 

5. verify the clock class metrics again

    

$ oc exec -it ds/linuxptp-daemon  -n openshift-ptp -c linuxptp-daemon-container -- curl -s localhost:9091/metrics | grep clock_class
(nothing shown)

 should report back metrics

ptpconfig used:

% cat cnfdg13-bc.yaml
apiVersion: ptp.openshift.io/v1
kind: PtpConfig
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"ptp.openshift.io/v1","kind":"PtpConfig","metadata":{"annotations":{"ran.openshift.io/ztp-deploy-wave":"10"},"name":"boundary","namespace":"openshift-ptp"},"spec":{"profile":[{"name":"boundary","phc2sysOpts":"-a -r -m -n 24 -N 8 -R 16","ptp4lConf":"# The interface name is hardware-specific\n[ens5f0]\nmasterOnly 1\n[ens5f1]\nmasterOnly 1\n[ens5f2]\nmasterOnly 1\n[ens5f3]\nmasterOnly 0\n[global]\n#\n# Default Data Set\n#\ntwoStepFlag 1\nslaveOnly 0\npriority1 128\npriority2 128\ndomainNumber 24\n#utc_offset 37\nclockClass 248\nclockAccuracy 0xFE\noffsetScaledLogVariance 0xFFFF\nfree_running 0\nfreq_est_interval 1\ndscp_event 0\ndscp_general 0\ndataset_comparison G.8275.x\nG.8275.defaultDS.localPriority 128\n#\n# Port Data Set\n#\nlogAnnounceInterval -3\nlogSyncInterval -4\nlogMinDelayReqInterval -4\nlogMinPdelayReqInterval -4\nannounceReceiptTimeout 3\nsyncReceiptTimeout 0\ndelayAsymmetry 0\nfault_reset_interval -4\nneighborPropDelayThresh 20000000\nmasterOnly 0\nG.8275.portDS.localPriority 128\n#\n# Run time options\n#\nassume_two_step 0\nlogging_level 6\npath_trace_enabled 0\nfollow_up_info 0\nhybrid_e2e 0\ninhibit_multicast_service 0\nnet_sync_monitor 0\ntc_spanning_tree 0\ntx_timestamp_timeout 50\nunicast_listen 0\nunicast_master_table 0\nunicast_req_duration 3600\nuse_syslog 1\nverbose 0\nsummary_interval 0\nkernel_leap 1\ncheck_fup_sync 0\nclock_class_threshold 135\n#\n# Servo Options\n#\npi_proportional_const 0.0\npi_integral_const 0.0\npi_proportional_scale 0.0\npi_proportional_exponent -0.3\npi_proportional_norm_max 0.7\npi_integral_scale 0.0\npi_integral_exponent 0.4\npi_integral_norm_max 0.3\nstep_threshold 2.0\nfirst_step_threshold 0.00002\nmax_frequency 900000000\nclock_servo pi\nsanity_freq_limit 200000000\nntpshm_segment 0\n#\n# Transport options\n#\ntransportSpecific 0x0\nptp_dst_mac 01:1B:19:00:00:00\np2p_dst_mac 01:80:C2:00:00:0E\nudp_ttl 1\nudp6_scope 0x0E\nuds_address /var/run/ptp4l\n#\n# Default interface options\n#\nclock_type BC\nnetwork_transport L2\ndelay_mechanism E2E\ntime_stamping hardware\ntsproc_mode filter\ndelay_filter moving_median\ndelay_filter_length 10\negressLatency 0\ningressLatency 0\nboundary_clock_jbod 0\n#\n# Clock description\n#\nproductDescription ;;\nrevisionData ;;\nmanufacturerIdentity 00:00:00\nuserDescription ;\ntimeSource 0xA0\n","ptp4lOpts":"-2 --summary_interval -4","ptpClockThreshold":{"holdOverTimeout":5,"maxOffsetThreshold":100,"minOffsetThreshold":-100},"ptpSchedulingPolicy":"SCHED_FIFO","ptpSchedulingPriority":10,"ptpSettings":{"logReduce":"true"}}],"recommend":[{"match":[{"nodeLabel":"node-role.kubernetes.io/master"}],"priority":4,"profile":"boundary"}]}}
    ran.openshift.io/ztp-deploy-wave: "10"
  creationTimestamp: "2026-01-30T14:30:51Z"
  generation: 1
  name: boundary
  namespace: openshift-ptp
  resourceVersion: "20653979"
  uid: e2d3de4f-7021-4ea0-9461-c636e86dbf6f
spec:
  profile:
  - name: boundary
    phc2sysOpts: -a -r -m -n 24 -N 8 -R 16
    ptp4lConf: |
      # The interface name is hardware-specific
      [ens5f0]
      masterOnly 1
      [ens5f1]
      masterOnly 1
      [ens5f2]
      masterOnly 1
      [ens5f3]
      masterOnly 0
      [global]
      #
      # Default Data Set
      #
      twoStepFlag 1
      slaveOnly 0
      priority1 128
      priority2 128
      domainNumber 24
      #utc_offset 37
      clockClass 248
      clockAccuracy 0xFE
      offsetScaledLogVariance 0xFFFF
      free_running 0
      freq_est_interval 1
      dscp_event 0
      dscp_general 0
      dataset_comparison G.8275.x
      G.8275.defaultDS.localPriority 128
      #
      # Port Data Set
      #
      logAnnounceInterval -3
      logSyncInterval -4
      logMinDelayReqInterval -4
      logMinPdelayReqInterval -4
      announceReceiptTimeout 3
      syncReceiptTimeout 0
      delayAsymmetry 0
      fault_reset_interval -4
      neighborPropDelayThresh 20000000
      masterOnly 0
      G.8275.portDS.localPriority 128
      #
      # Run time options
      #
      assume_two_step 0
      logging_level 6
      path_trace_enabled 0
      follow_up_info 0
      hybrid_e2e 0
      inhibit_multicast_service 0
      net_sync_monitor 0
      tc_spanning_tree 0
      tx_timestamp_timeout 50
      unicast_listen 0
      unicast_master_table 0
      unicast_req_duration 3600
      use_syslog 1
      verbose 0
      summary_interval 0
      kernel_leap 1
      check_fup_sync 0
      clock_class_threshold 135
      #
      # Servo Options
      #
      pi_proportional_const 0.0
      pi_integral_const 0.0
      pi_proportional_scale 0.0
      pi_proportional_exponent -0.3
      pi_proportional_norm_max 0.7
      pi_integral_scale 0.0
      pi_integral_exponent 0.4
      pi_integral_norm_max 0.3
      step_threshold 2.0
      first_step_threshold 0.00002
      max_frequency 900000000
      clock_servo pi
      sanity_freq_limit 200000000
      ntpshm_segment 0
      #
      # Transport options
      #
      transportSpecific 0x0
      ptp_dst_mac 01:1B:19:00:00:00
      p2p_dst_mac 01:80:C2:00:00:0E
      udp_ttl 1
      udp6_scope 0x0E
      uds_address /var/run/ptp4l
      #
      # Default interface options
      #
      clock_type BC
      network_transport L2
      delay_mechanism E2E
      time_stamping hardware
      tsproc_mode filter
      delay_filter moving_median
      delay_filter_length 10
      egressLatency 0
      ingressLatency 0
      boundary_clock_jbod 0
      #
      # Clock description
      #
      productDescription ;;
      revisionData ;;
      manufacturerIdentity 00:00:00
      userDescription ;
      timeSource 0xA0
    ptp4lOpts: -2 --summary_interval -4
    ptpClockThreshold:
      holdOverTimeout: 5
      maxOffsetThreshold: 100
      minOffsetThreshold: -100
    ptpSchedulingPolicy: SCHED_FIFO
    ptpSchedulingPriority: 10
    ptpSettings:
      logReduce: "true"
  recommend:
  - match:
    - nodeLabel: node-role.kubernetes.io/master
    priority: 4
    profile: boundary