fatal0Efx Posted February 16, 2022 Share Posted February 16, 2022 I seem to have lost internet access, and I believe it was my ISP, but anyway I was doing some persistent pings to an IP and eventually it came back up. But none of my PCs can resolve DNS. They are configured for DHCP so the DNS passed down to the clients is the router's IP. For whatever reason the R2 won't allow DNS lookups now. If I statically assign the same DNS servers I have the router configured to use, my PCs can get back on the internet. It just seems the R2 is just borked when it comes to DNS. I've rebooted it twice now via the menu and a hard boot by pulling power for 30 seconds. NSlookup states: *** dumaos.lan can't find google.com: Query refused. It'll accept a query for dumaos.lan and resolve though, though oddly my PC will resolve that to the gateway even if I'm pointing to Google DNS so perhaps that's not coming from DNS. Anyway it seems the router itself seems to be able to resolve external DNS... it's able to do connection benchmarks and I assume DNS is being used to resolve hosts for that purpose? I hope yall didn't statically assign IPs for that. Link to comment Share on other sites More sharing options...
Zippy Posted February 16, 2022 Share Posted February 16, 2022 Ive had this very same thing happen before.. My only course of action was to do a factory reset to get it to work again.. Were you using your ISP DNS or some other of your choice? Thanks! Zippy. Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 16, 2022 Author Share Posted February 16, 2022 Was using OpenDNS. Anyway it doesn't matter what DNS I tell the R2 to use, it simply won't accept DNS requests from clients. This is bananas. Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 16, 2022 Author Share Posted February 16, 2022 We need a terminal or rapp to allow us to perform various networking diagnostics from the R2 itself to validate it can do things it needs to do. Such as performing NSlookups against the DNS servers it's configured for. Also when pointing to ISP for DNS it doesn't seem to show what DNS servers it pulled anywhere? Am I overlooking something? Zippy 1 Link to comment Share on other sites More sharing options...
Zippy Posted February 16, 2022 Share Posted February 16, 2022 No your not looking anything over.. Basically what you have discovered is something ive stumbled on as well.. I will tag @Netduma Liam and @Netduma Fraser here so maybe they can give some insight on this.. Then we will both know.. They should respond in the morning.. Thanks for posting this. Zippy. Newfie 1 Link to comment Share on other sites More sharing options...
Netduma Liam Posted February 16, 2022 Share Posted February 16, 2022 How strange! If you just enable 'Use upstream DNS' does it then work again? Could you clarify on which firmware you're having this issue? Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 17, 2022 Author Share Posted February 17, 2022 13 hours ago, Netduma Liam said: How strange! If you just enable 'Use upstream DNS' does it then work again? Could you clarify on which firmware you're having this issue? No DNS works, including upstream or custom. I'm on the latest I believe... R2 3.0.394. At this point I've done everything I can think of short of factory reset which I REALLY don't want to do. Is there someway to like SSH into this thing to do higher level diagnostics? Link to comment Share on other sites More sharing options...
Netduma Liam Posted February 17, 2022 Share Posted February 17, 2022 10 hours ago, fatal0Efx said: No DNS works, including upstream or custom. I'm on the latest I believe... R2 3.0.394. At this point I've done everything I can think of short of factory reset which I REALLY don't want to do. Is there someway to like SSH into this thing to do higher level diagnostics? Do you have DNS configured in Windows? If so, please remove it from your adapter options. Otherwise could you please enable 'Remote access to tech support' from the WAN settings and I'll take a deeper look at what might be happening. Link to comment Share on other sites More sharing options...
Fuzy Posted February 17, 2022 Share Posted February 17, 2022 for information, I have the same problem with an ISP, I think it's due to the fact that the ipv4 is encapsulated in the ipv6 Netduma Fraser 1 Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 18, 2022 Author Share Posted February 18, 2022 On 2/17/2022 at 6:08 AM, Netduma Liam said: Do you have DNS configured in Windows? If so, please remove it from your adapter options. Otherwise could you please enable 'Remote access to tech support' from the WAN settings and I'll take a deeper look at what might be happening. Yes I have DNS servers statically configured in Windows, otherwise I wouldn't be able to respond to this post. Setting to automatic pulls the R2's IP for DNS and nothing works. Remote access is enabled.. Do you need anything from me to know you're connecting to my specific router, not someone elses? Link to comment Share on other sites More sharing options...
Administrators Netduma Fraser Posted February 18, 2022 Administrators Share Posted February 18, 2022 8 minutes ago, fatal0Efx said: Yes I have DNS servers statically configured in Windows, otherwise I wouldn't be able to respond to this post. Setting to automatic pulls the R2's IP for DNS and nothing works. Remote access is enabled.. Do you need anything from me to know you're connecting to my specific router, not someone elses? That is all that is needed thank you, Liam will have to connect on Tuesday now, no need to do anything on your side or be by the router Link to comment Share on other sites More sharing options...
Netduma Liam Posted February 23, 2022 Share Posted February 23, 2022 On 2/18/2022 at 5:55 PM, fatal0Efx said: Yes I have DNS servers statically configured in Windows, otherwise I wouldn't be able to respond to this post. Setting to automatic pulls the R2's IP for DNS and nothing works. Remote access is enabled.. Do you need anything from me to know you're connecting to my specific router, not someone elses? Apologies for the delay, just had a look around, everything looked to be running properly. I've restarted DNS and rebooted the router afterwards, can you let me know if you're still having the same problem? Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 23, 2022 Author Share Posted February 23, 2022 Seems to be working now. Why on earth would you restarting DNS and the router do anything different than me restarting the router? lol. Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 24, 2022 Author Share Posted February 24, 2022 Spoke too soon. Out of nowhere (while just just browsing the internet), websites stopped loading and DNS resolution through R2 is down again. Back on static DNS servers and working fine. This is so frustrating. What could be going on here? I might have no recourse but to replace this thing with something else. Link to comment Share on other sites More sharing options...
Netduma Liam Posted February 24, 2022 Share Posted February 24, 2022 12 hours ago, fatal0Efx said: Spoke too soon. Out of nowhere (while just just browsing the internet), websites stopped loading and DNS resolution through R2 is down again. Back on static DNS servers and working fine. This is so frustrating. What could be going on here? I might have no recourse but to replace this thing with something else. OK, would you mind if we repeat the process again but this time I'll enable some remote logging on your R2? Then, next time it happens, you can report what time it occurred and we should then be able to see something around the time the error occurred. Let me know and I'll get ahead and enable that, it will reboot your router in the process. Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 24, 2022 Author Share Posted February 24, 2022 Sure. I just hope I'm around and doing something when it breaks. When do you intend to reboot, however? Luckily I wasn't affected last time but my partner and I both work from home so I cannot have this affecting that and I usually am gaming until around midnight EST. Before you perform the actions, however, can you issue nslookup commands from the router itself to an external provider to verify that is actually working when this is occurring. Link to comment Share on other sites More sharing options...
Administrators Netduma Fraser Posted February 24, 2022 Administrators Share Posted February 24, 2022 It would be tomorrow now so quite possibly when you're asleep, you don't need to be around for us to do so as long as remote support is enabled prior to that. We can do that yes. fatal0Efx 1 Link to comment Share on other sites More sharing options...
fatal0Efx Posted February 28, 2022 Author Share Posted February 28, 2022 Has this occurred yet? I assume no because DNS resolution is still broken. Link to comment Share on other sites More sharing options...
Administrators Netduma Fraser Posted February 28, 2022 Administrators Share Posted February 28, 2022 I'll check in with Liam and he should be able to get a dev to take a look on Tuesday Link to comment Share on other sites More sharing options...
Netduma Liam Posted March 2, 2022 Share Posted March 2, 2022 On 2/28/2022 at 11:14 PM, fatal0Efx said: Has this occurred yet? I assume no because DNS resolution is still broken. Apologies for the delay, I've just enabled the remote logging, let us know if DNS is now working and if the issue occurs again. Link to comment Share on other sites More sharing options...
fatal0Efx Posted March 2, 2022 Author Share Posted March 2, 2022 DNS is not working. Link to comment Share on other sites More sharing options...
Administrators Netduma Fraser Posted March 2, 2022 Administrators Share Posted March 2, 2022 Thanks for letting us know, we'll check the remote logs and see if we can spot the issue. Link to comment Share on other sites More sharing options...
Netduma Liam Posted March 3, 2022 Share Posted March 3, 2022 17 hours ago, fatal0Efx said: DNS is not working. There are some interesting entries in there, I've created a task for a developer to investigate. I'll get back to you as soon as I've heard back. Link to comment Share on other sites More sharing options...
fatal0Efx Posted March 3, 2022 Author Share Posted March 3, 2022 Appreciate it. Link to comment Share on other sites More sharing options...
fatal0Efx Posted March 11, 2022 Author Share Posted March 11, 2022 I'm assuming nothing has been heard yet? It's been a week so I wanted to check. With that said, it appears to be working again. Not sure you did anything remotely? I haven't done anything myself. Link to comment Share on other sites More sharing options...
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