I'm having the exact same issue on my RPi 3. I've been using the Pi for a very long time now and never had an issue. But since last week I updated the OS to the latest Raspberry OS and the Pi is now running as a K3s master node. Since then the Pi keeps crashing like this. I've having a lot of network traffic, way more than it had before it was used as a k3s master node.
About 2 days ago I tried the rpi-update which Christopher provided, and since then the Pi is running without any crashes (yet). Almost 48 hours already, where before it wasn't able to run 24 hours straight. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861936 Title: Raspberry Pi 3 network dies shortly after a burst of IPv6 tunnel network load ((lan78xx): transmit queue 0 timed out) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1861936/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
