-1019 kernel should be in the eoan-proposed channel.
And I tried to setup the 6in4 on my host laptop, it didn't work, maybe the ISP block the packets because of GFW of china.
And since the dwc2 also has this problem, it looks this issue has nothing to do with usb host driver, could you plug a different usb->ethernet (different brand from lan78xx) and test with this usb->ethernet, let us see if you could still reproduce the problem?
-1019 kernel should be in the eoan-proposed channel.
And I tried to setup the 6in4 on my host laptop, it didn't work, maybe the ISP block the packets because of GFW of china.
And since the dwc2 also has this problem, it looks this issue has nothing to do with usb host driver, could you plug a different usb->ethernet (different brand from lan78xx) and test with this usb->ethernet, let us see if you could still reproduce the problem?