I found it's an issue with my 4 ax88179 USB 3.0 to ethernet adapters.
1 is by StarTech and I have 2 by D-Link and 1 by cheap company
After a boot, they come up with issues after a few minutes with all 4
I tried my AX88772C USB 2.0 to ethernet adapter and it works fine
I have a RealTek USB 3.0 adapter that I just tested and works fine
This is with RPi3
Seems like ax88179 issue.
I'll stick to RealTek
Edit: and now I see this is same issue reported with same driver:
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