enum io.DnsResponseCode

enum DnsResponseCode {
    NoError               = 0,
    FormatError           = 1,
    ServerFailure         = 2,
    NotExistentDomain     = 3,
    NotImplemented        = 4,
    QueryRefused          = 5,
    DomainExists          = 6,
    RrSetExists           = 7,
    NotExistentRrSet      = 8,
    NotAuthorized         = 9,
    NotZone               = 10,
    DsoTypeNotImplemented = 11,
};