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Used in: SubmarinerNATDiscoveryRequest, SubmarinerNATDiscoveryResponse

• string cluster_id = 1

  should we hash this for privacy? a hash can be checked against a known list, but can't be decoded

• string endpoint_id = 2

Used in: SubmarinerNATDiscoveryRequest, SubmarinerNATDiscoveryResponse

• string IP = 1

• int32 port = 2

Used in: SubmarinerNATDiscoveryResponse

• OK = 0

• NAT_DETECTED = 1

• UNKNOWN_DST_CLUSTER = 2

• UNKNOWN_DST_ENDPOINT = 3

• MALFORMED = 4

• int32 version = 1

• oneof message

  • SubmarinerNATDiscoveryRequest request = 2

  • SubmarinerNATDiscoveryResponse response = 3

Used in: SubmarinerNATDiscoveryMessage

• uint64 request_number = 1

• optional EndpointDetails sender = 2

• optional EndpointDetails receiver = 3

• optional IPPortPair using_src = 4

  The following information would allow the receiver to identify and log if any form of NAT traversal is happening on the path

• optional IPPortPair using_dst = 5

Used in: SubmarinerNATDiscoveryMessage

• uint64 request_number = 1

• ResponseType response = 2

• optional EndpointDetails sender = 3

• optional EndpointDetails receiver = 4

• bool src_ip_nat_detected = 5

• bool src_port_nat_detected = 6

• bool dst_ip_nat_detected = 7

• optional IPPortPair received_src = 8

  The received SRC IP / SRC port is reported, which will be useful for diagnosing corner cases