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• Make sure we have wpan0 interface up
• brlan0 should be up and running
• who creates wpan0
  • otbr-agent
  • More technical explanation
    • Initial OTBR-agent startup:
      • OTBR-agent process starts
      • At this point, no wpan0 interface exists yet
      • No socket exists yet at /run/openthread-wpan0.sock
    • OTBR-agent creates socket:
      • Creates Unix domain socket at /run/openthread-wpan0.sock
      • This socket will be used for IPC/control operations
    • OTBR-agent creates network interface:
      • Creates the wpan0 network interface
      • Takes ownership of managing this interface
    • Runtime dependencies:
      • The wpan0 interface is ONLY available while OTBR-agent is running
      • If OTBR-agent stops, the wpan0 interface goes away
      • Other services/processes should not expect wpan0 to exist without OTBR-agent running
    • Communication flow:
      • Other processes can communicate with OTBR-agent through the socket at /run/openthread-wpan0.sock
      • Network traffic goes through the wpan0 interface managed by OTBR-agent