<div dir="ltr">Also should point out that when you do a +trace, your /etc/resolv.conf is irrelevant since dig is going to try to figure things out from the root on its own.<div><br></div><div>The fact you were careful to talk about your resolv.conf signals that you may not be troubleshooting whatever you think you are.</div><div><br></div><div>What is the real problem here?</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Sep 29, 2022 at 3:57 PM Mark Andrews <<a href="mailto:marka@isc.org">marka@isc.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
<br>
> On 30 Sep 2022, at 07:50, Mike Hodson <<a href="mailto:mystica@gmail.com" target="_blank">mystica@gmail.com</a>> wrote:<br>
> <br>
> I'm attempting to figure out how/why my reverse DNS delegation is broken.<br>
> I've already deleted systemd-resolved's temporary resolv.conf and added in an immutable single line <br>
> nameserver 1.1.1.1<br>
> resolv.conf.<br>
> <br>
> I can dig +trace forward hostnames fine.<br>
> I cannot dig -x an ip +trace.<br>
> All I get is the root-servers instead of any sort of reverse looking up happening at all.<br>
> What am I doing wrong?<br>
<br>
Hiding the actual address you are wanting the reverse lookups for. Really you have an incredible resource here of knowledgeable people with millennia of experience between them who would have looked at every delegation and then would have told you what they saw that was wrong. <br>
<br>
Not installing maintenance releases when they are released. dig +trace is a little fragile in 9.18.1 following the change to libuv. Upgrade to a current release.<br>
<br>
> Thanks,<br>
> <br>
> Mike<br>
> <br>
> $ dig -x 208.x.x.x +trace <br>
> <br>
> ; <<>> DiG 9.18.1-1ubuntu1.1-Ubuntu <<>> -x 208.x.x.x +trace <br>
> ;; global options: +cmd <br>
> . 509855 IN NS <a href="http://a.root-servers.net" rel="noreferrer" target="_blank">a.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://b.root-servers.net" rel="noreferrer" target="_blank">b.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://c.root-servers.net" rel="noreferrer" target="_blank">c.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://d.root-servers.net" rel="noreferrer" target="_blank">d.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://e.root-servers.net" rel="noreferrer" target="_blank">e.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://f.root-servers.net" rel="noreferrer" target="_blank">f.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://g.root-servers.net" rel="noreferrer" target="_blank">g.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://h.root-servers.net" rel="noreferrer" target="_blank">h.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://i.root-servers.net" rel="noreferrer" target="_blank">i.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://j.root-servers.net" rel="noreferrer" target="_blank">j.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://k.root-servers.net" rel="noreferrer" target="_blank">k.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://l.root-servers.net" rel="noreferrer" target="_blank">l.root-servers.net</a>. <br>
> . 509855 IN NS <a href="http://m.root-servers.net" rel="noreferrer" target="_blank">m.root-servers.net</a>. <br>
> . 509855 IN RRSIG NS 8 0 518400 20221012170000 20220929160000 20826 . FkcsBmNz2oK02ARhYfNSfxbnEL93RITDteQtHQoPn8zHZg9B6BRXqkH9 +UpAEViDraX+4l8YJiUvYzrHh9twpQry0vv7xgDLoDdU9kRqokG5DEoq Ueqph6qleC6Vylga4f1MzW<br>
> N+Dh9zK9/eCSp6WxwgbnW53a9GMDbI5KWZ WkcWw3IPHVvVwDZfWhrKJtKZ3hafsGgmigm9F01Xk17prOAS6jBbvYjT jCUyTl3UZJ+bAKS4tkpFdjp78raxBKBQPN6TzdLjtxYQrhriZZ3Gjdcg dT+WQkLGYuyeakm2JqVe9vXGMGn0XkZEGMYnh7iW80N1XHyBMfhzGO+s 61zvWA== <br>
> ;; Received 1097 bytes from 1.1.1.1#53(1.1.1.1) in 12 ms<br>
> <br>
> <br>
> -- <br>
> Visit <a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a> to unsubscribe from this list<br>
> <br>
> ISC funds the development of this software with paid support subscriptions. Contact us at <a href="https://www.isc.org/contact/" rel="noreferrer" target="_blank">https://www.isc.org/contact/</a> for more information.<br>
> <br>
> <br>
> bind-users mailing list<br>
> <a href="mailto:bind-users@lists.isc.org" target="_blank">bind-users@lists.isc.org</a><br>
> <a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a><br>
<br>
-- <br>
Mark Andrews, ISC<br>
1 Seymour St., Dundas Valley, NSW 2117, Australia<br>
PHONE: +61 2 9871 4742 INTERNET: <a href="mailto:marka@isc.org" target="_blank">marka@isc.org</a><br>
<br>
-- <br>
Visit <a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a> to unsubscribe from this list<br>
<br>
ISC funds the development of this software with paid support subscriptions. Contact us at <a href="https://www.isc.org/contact/" rel="noreferrer" target="_blank">https://www.isc.org/contact/</a> for more information.<br>
<br>
<br>
bind-users mailing list<br>
<a href="mailto:bind-users@lists.isc.org" target="_blank">bind-users@lists.isc.org</a><br>
<a href="https://lists.isc.org/mailman/listinfo/bind-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/bind-users</a><br>
<br>
</blockquote></div>