Hi all!
I have this weird issue with my Tailscale setup. I'm running Tailscale as a plugin in my opnSense that's being used as an exit node. Have done so for almost a year with not a single use. But few days ago it started experiencing this issue where Reddit just stalls connections. Basically few posts and media will load (be it some of the text, images and few seconds of video) and then nothing, all hangs. Rest of the internet on device works fine. It's same on app as well as the browser. Reddit is the place where I can see this issue the most. Any other stuff works perfectly, be it speed tests, YT, IG etc.
I've spent loads of time messing around with my setup yet no joy. I've reinstalled app, plugin, restored my previous opn backup etc.
Firewall rule is set properly, I get direct connection to my node as well as other clients. It's the same regardless of DNS being used, either my local pihole, tailscale dns or cloudflare. Other things I've checked are MTU size, MSS clamping on interfaces (that didnt do anything at all). Private DNS is off on my device, MagicDNS is off as well. Not sure what other information I could provide to help with fault finding. But I've spent many hours with various AI assistants and got nowhere and their consensus seems to be a textbook DNS black hole due to MTU mismatch.
What's weird is that all was absolutely perfect and no settings were changed. All I did was update my packages as I figured it's a good thing to be doing right now with how stuff is going on the internet nowdays.
Hopefully that's enough information to troubleshoot the issue but if not I'm happy to provide more info.
With some luck it might be just a glitch in the app/plugin and hopefully that'll get fixed soon.
Did anyone had a similiar issue and managed to fix it? All input is greatly appreciated!
Thanks a lot!
Source: r/Tailscale · by /u/Luk4shO