all iperf results are zeros

[0oM4R]

on many nodes on main net and dev net, we can't get the iperf test

  name: 'iperf',
  description: 'Test public nodes network performance with both UDP and TCP over IPv4 and IPv6',
  timestamp: 1732175765,
  result: [
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: '',
      node_id: 11,
      node_ip: '',
      test_type: '',
      upload_speed: 0
    },
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: '',
      node_id: 11,
      node_ip: '',
      test_type: '',
      upload_speed: 0
    },
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: '',
      node_id: 11,
      node_ip: '',
      test_type: '',
      upload_speed: 0
    },
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: '',
      node_id: 11,
      node_ip: '',
      test_type: '',
      upload_speed: 0
    },
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: 'unable to connect to server - server may have stopped running or use a different port, firewall issue, etc.: Operation timed out',
      node_id: 14,
      node_ip: '185.206.122.31',
      test_type: 'tcp',
      upload_speed: 0
    },
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: 'unable to connect to server - server may have stopped running or use a different port, firewall issue, etc.: Operation timed out',
      node_id: 14,
      node_ip: '2a10:b600:1::cc4:7a30:65b5',
      test_type: 'tcp',
      upload_speed: 0
    },
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: 'unable to connect to server - server may have stopped running or use a different port, firewall issue, etc.: Operation timed out',
      node_id: 14,
      node_ip: '185.206.122.31',
      test_type: 'udp',
      upload_speed: 0
    },
    {
      cpu_report: {
        host_system: 0,
        host_total: 0,
        host_user: 0,
        remote_system: 0,
        remote_total: 0,
        remote_user: 0
      },
      download_speed: 0,
      error: 'unable to connect to server - server may have stopped running or use a different port, firewall issue, etc.: Operation timed out',
      node_id: 14,
      node_ip: '2a10:b600:1::cc4:7a30:65b5',
      test_type: 'udp',
      upload_speed: 0
    }
  ]
}