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Description of problem:

After fix for bz781920 and bz772080, we send truncated packets when transmission buffer overrun (e1000/8139), we'd better drop the truncated packets as sending the partial packets were meaningless.


Version-Release number of selected component (if applicable):
6.4

How reproducible:


Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:

Closing.

- This is mostly an optimization issue for the non-recommended emulated NICs
- Not reported by the field.