Ethernet with Overhead

I'm on a coax cable internet connection and tweaking my SQM. For Link Layer, I am selecting Ethernet with Overhead but it got me wondering, does selecting Ethernet with Overhead include the Ethernet frame size of 14 bytes or do I have to include that in the overhead total number?

For example, I would be using PPPoE which is 8 bytes so do I just select "Ethernet with Overhead" and enter 8 in the field or do I enter 22 (8+14)?

I searched the forums but could not find a clear answer so thought I'd ask.

There are some examples depending on the technology.

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