Comment 7 for bug 1827246

The root cause was 6080 on OAM was blocked by GlobalNetworkPolicy controller-oam-if-gnp

You can check it by cmd: "kubectl describe GlobalNetworkPolicy controller-oam-if-gnp" and 6080 was NOT in TCP Allow list.

  Ingress:
    Action: Allow
    Destination:
      Ports:
        22
        18002
        4545
        15491
        6385
        7777
        6443
        7480
        9311
        5000
        8080
    Ip Version: 4
    Protocol: TCP

I will apply a patch to add this port.