LAN/NIC problem

[MarkHaysHarris777]

So this eliminates my "network enviornment" and isolates my pine64 in a known good environment to have a hardware issue.

Your approach to isolating the problem to your board is correct.

... I did the same; but, in my case I created a 'known perfect' environment for testing, and then isolated the hardware problem to the board in question.  When the problem follows the hardware (rather than the software , nor the environment ) then the problem is difinitively hardware related. Thank you for your input.

Having said that;  however, that does not say in any terms 'what' the hardware difficulty is, only that its hardware , and board specific.  We still need to know the cause , whether cold solder joints, inferior components, or other, or even a combination. Also, even though this problem is difinitively hardware in nature does not preclude that environment ( or even software ) may not affect test results--- which is also contributing to the confusion here. Test results ARE being affected by environment and software---BUT the nature of the problem is difinitively hardware and board specific (at this point in the investigation).