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MGCP packets with Response Code 100 are dropped by Security Gateway
Symptoms
  • MGCP packets with Response Code 100 are dropped by Security Gateway (Response Code 100: The transaction is currently being executed. An actual completion message will follow on later)

  • Kernel debug shows:
    fw_log_drop: Packet proto=17 ... dropped by fw_early_sip_nat Reason: failed to get MGCP ports
Cause

MGCP packets with Response Code 100 without status are not allowed.


Solution
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