Mike 1. You can set the server with @ so in your case `dig @1.1.1.1 -x 208.x.x.x +trace` 2. Test with an IP that you know should work `$ dig +short @8.8.4.4 -x 8.8.8.8` answers `dns.google.` for example 3. Confirm your RIR or provider has working NS set for the range. Query directly the NS you think should be working. 4. `+[no]trace This option toggles tracing of the delegation path from the root name servers for the name being looked up.` 5. It sounds like your dig is answering correctly. `
On Thu, Sep 29, 2022 at 3:51 PM Mike Hodson <[email protected]> wrote: > I'm attempting to figure out how/why my reverse DNS delegation is broken. > I've already deleted systemd-resolved's temporary resolv.conf and added in > an immutable single line > nameserver 1.1.1.1 > resolv.conf. > > I can dig +trace forward hostnames fine. > I cannot dig -x an ip +trace. > All I get is the root-servers instead of any sort of reverse looking up > happening at all. > What am I doing wrong? > > Thanks, > > Mike > > $ dig -x 208.x.x.x +trace > > ; <<>> DiG 9.18.1-1ubuntu1.1-Ubuntu <<>> -x 208.x.x.x +trace > ;; global options: +cmd > . 509855 IN NS a.root-servers.net. > . 509855 IN NS b.root-servers.net. > . 509855 IN NS c.root-servers.net. > . 509855 IN NS d.root-servers.net. > . 509855 IN NS e.root-servers.net. > . 509855 IN NS f.root-servers.net. > . 509855 IN NS g.root-servers.net. > . 509855 IN NS h.root-servers.net. > . 509855 IN NS i.root-servers.net. > . 509855 IN NS j.root-servers.net. > . 509855 IN NS k.root-servers.net. > . 509855 IN NS l.root-servers.net. > . 509855 IN NS m.root-servers.net. > . 509855 IN RRSIG NS 8 0 518400 > 20221012170000 20220929160000 20826 . > FkcsBmNz2oK02ARhYfNSfxbnEL93RITDteQtHQoPn8zHZg9B6BRXqkH9 > +UpAEViDraX+4l8YJiUvYzrHh9twpQry0vv7xgDLoDdU9kRqokG5DEoq > Ueqph6qleC6Vylga4f1MzW > N+Dh9zK9/eCSp6WxwgbnW53a9GMDbI5KWZ > WkcWw3IPHVvVwDZfWhrKJtKZ3hafsGgmigm9F01Xk17prOAS6jBbvYjT > jCUyTl3UZJ+bAKS4tkpFdjp78raxBKBQPN6TzdLjtxYQrhriZZ3Gjdcg > dT+WQkLGYuyeakm2JqVe9vXGMGn0XkZEGMYnh7iW80N1XHyBMfhzGO+s 61zvWA== > ;; Received 1097 bytes from 1.1.1.1#53(1.1.1.1) in 12 ms > > > -- > Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > ISC funds the development of this software with paid support > subscriptions. Contact us at https://www.isc.org/contact/ for more > information. > > > bind-users mailing list > [email protected] > https://lists.isc.org/mailman/listinfo/bind-users > -- - Andrew "lathama" Latham -
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