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--></style></head><body lang=DE link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>if you are using such a configuration I would suggest to go with something like this:</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><a href="https://thepihut.com/blogs/raspberry-pi-tutorials/17209332-adding-a-real-time-clock-to-your-raspberry-pi">https://thepihut.com/blogs/raspberry-pi-tutorials/17209332-adding-a-real-time-clock-to-your-raspberry-pi</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>That way you won’t have that Problem any more. Everything else I can think of is not reliable.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Bye</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Gesendet von <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> für Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='border:none;padding:0cm'><b>Von: </b><a href="mailto:unbound-users@lists.nlnetlabs.nl">dy1977--- via Unbound-users</a><br><b>Gesendet: </b>Montag, 2. März 2020 07:59<br><b>An: </b><a href="mailto:unbound-users@nlnetlabs.nl">unbound-users@nlnetlabs.nl</a><br><b>Betreff: </b>resolution fails when the date of the server is more than 2 days late</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hello,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am running unbound on SBC cards (Raspberry Pi, Tinker board, Rock64). </p><p class=MsoNormal>These cards don't have a hardware clock. They are set to resolve to </p><p class=MsoNormal>127.0.0.1 so that the local processes use Unbound for DNS requests. </p><p class=MsoNormal>Everything fine here.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>But when I don't have used a card for more than 1 or 2 days (I didn't </p><p class=MsoNormal>test the exact threshold), when I start one, I get in a vicious cycle :</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The clock is 2 days or more late</p><p class=MsoNormal>All DNS resolutions fail because of this difference</p><p class=MsoNormal>ntp.org calls fail</p><p class=MsoNormal>The clock is not updated</p><p class=MsoNormal>All DNS resolutions fail</p><p class=MsoNormal>And so on...</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The way out of the cycle is to set the date manually, after that </p><p class=MsoNormal>everything is fine again. But the user is not expected to do that in a </p><p class=MsoNormal>linux command line.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there a way to prevent this behaviour from unbound, and get at least </p><p class=MsoNormal>ntp.org resolved when there is a serious clock drift ?</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I could do that by setting the ip address of ntp.org somewhere, but if </p><p class=MsoNormal>this ip address changes one day, the system will fail again, so I don't </p><p class=MsoNormal>like it.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There is a ticket here about this question : </p><p class=MsoNormal>https://github.com/RefugeeHotspot/RefugeeHotspot/issues/74</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If the answer is not obvious, I will provide more details about unbound </p><p class=MsoNormal>answers in this situation.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Dysmas</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>