Is there a patch to include configuration for this out there somewhere yet? I'd be interested in testing it out; can possibly help with the patch if it's started too.

Oh, I see my changes were already pulled in, missed that!

In T2158#56542, @jjakob wrote:

Please add r8169 as well. The config failed to load at boot after upgrading to latest rolling because of this error. The script should check if the interface supports pause and silently continue if it doesn't, otherwise maintaining a list of all pause-unsupported interfaces is going to be next to impossible. I suspect a lot more of them don't.