enum io.IcmpType

enum IcmpType: uint8_t {
    EchoReply              = 0,
    DestinationUnreachable = 3,
    SourceQuench           = 4,
    Redirect               = 5,
    EchoRequest            = 8,
    RouterAdvertisement    = 9,
    RouterSelection        = 10,
    TimeExceeded           = 11,
    ParameterProblem       = 12,
    TimestampRequest       = 13,
    TimestampReply         = 14,
    InformationRequest     = 15,
    InformationReply       = 16,
    AddressMaskRequest     = 17,
    AddressMaskReply       = 18,
    TraceRoute             = 30,
};