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<p class="MsoNormal"><span style="font-size:11.0pt">Hello,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I am running unbound 1.6.6 on Amazon Linux (RHEL 7 derivative).</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have an issue where startup is taking roughly a minute. After reading several posts I discovered that this is due to unbound trying to contact root DNS servers and it takes a minute to timeout. As a test
I updated my outbound rules to allow all outbound traffic on port 53. This indeed made startup almost immediate.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Unfortunately I have been told by my security team that I cannot enable this rule since they require all outbound DNS traffic to route through OpenDNS. In short I need to set up my unbound as a “dumb forwarder”.
I tried setting module-config: "iterator" to disable DNSSEC but the behavior is the same. I even tried putting in the OpenDNS server IPs in root.hints but the startup time is still around a minute (timeout). As a further test I put one of the known root servers
as the only entry in the root.hints file and set an outbound rule just for that server. The behavior I am seeing is it is faster but not what I expect. Start up takes 7-10 seconds which leads me to believe that it is still trying all of the root servers and
not just the one I have configured.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Does anyone know how to truly disable the root server queries on start up? I have read several of the threads and this appears to be the closest to my issue:</span><o:p></o:p></p>
<p class="MsoNormal"><a href="https://nlnetlabs.nl/pipermail/unbound-users/2016-November/004533.html">https://nlnetlabs.nl/pipermail/unbound-users/2016-November/004533.html</a><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">In the end he was told that it may be due to an older version of Unbound since the bug was fixed. I verified I am running the proper/latest for my Linux distribution unbound version (1.6.6):</span><o:p></o:p></p>
<p class="MsoNormal"><a href="https://repology.org/project/unbound/versions">https://repology.org/project/unbound/versions</a><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Here is my config:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">server:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> directory: "/etc/unbound"</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> username: "unbound"</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> pidfile: "/var/run/unbound.pid:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> verbosity: 2</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> interface: 127.0.0.1</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> access-control: 127.0.0.0/8 allow</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> domain-insecure: "."</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> prefetch: yes</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> num-threads: 2</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> root-hints: "root.hints" # I added for my tests</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> module-config: "iterator"</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> do-ip6: no</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">forward-zone:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> name: "."</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> forward-addr: 208.67.222.222</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> forward-addr: 208.67.222.220</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Daniel</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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