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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>More questions on DoT…<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Having setup DoT and got it all working, I was under the impression that all DNS queries would now use TLS over TCP. With that in mind I set:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>do-udp: no<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>having changed that setting unbound will not answer any queries at all.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Either local-data<o:p></o:p></p><p class=MsoNormal>C:\>dig -x 192.168.1.20<o:p></o:p></p><p class=MsoNormal>; <<>> DiG 9.14.4 <<>> -x 192.168.1.3<o:p></o:p></p><p class=MsoNormal>;; global options: +cmd<o:p></o:p></p><p class=MsoNormal>;; connection timed out; no servers could be reached<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Or external<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>C:\>dig www.microsoft.com<o:p></o:p></p><p class=MsoNormal>; <<>> DiG 9.14.4 <<>> www.microsoft.com<o:p></o:p></p><p class=MsoNormal>;; global options: +cmd<o:p></o:p></p><p class=MsoNormal>;; connection timed out; no servers could be reached<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>With UDP enabled there are no problems.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So the question is:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Why does UDP have to be enabled?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>How can I be certain that ALL forwarded queries are over TCP if UDP is enabled?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-GB'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-GB'>Ray<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>