Comment 28 for bug 1861936

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Hui Wang (hui.wang) wrote : Re: Raspberry Pi 3 network dies shortly after a burst of SD card IO and network load ((lan78xx): transmit queue 0 timed out)

So both your RPI3B+ and your host mac machine setup the IPv6 tunnel, and they share the same tunnel from tunnelbroker.net.

And this is my example configs and my two yamls:

https://pastebin.ubuntu.com/p/TDCDMrtzCb/

anything is wrong?