NWConnection.EstablishmentReport.Resolution.DNSProtocol.unknown The DNS response protocol is unknown or not applicable. Declarationcase unknown See AlsoResolution TransportsNWConnection.EstablishmentReport.Resolution.DNSProtocol.udpNWConnection.EstablishmentReport.Resolution.DNSProtocol.tcpNWConnection.EstablishmentReport.Resolution.DNSProtocol.tlsNWConnection.EstablishmentReport.Resolution.DNSProtocol.https