I'm having this issue as well, but on Raspbian 10. Symptoms seems the same, generally occurs with high load. However, I don't seem to need IPv6 packets to cause this - my network is IPv4 only.
I thought I had a power problem because I am also using an external HDD (it's also working as a NAS), but with the powered hub things aren't any better. -- 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
