A problem where connected devices' full-duplex/half-duplex settings don't match, degrading communication quality.
A problem where the full-duplex/half-duplex settings between connected devices don't match, causing increased latency and packet discards. It commonly happens when one side is set to auto-negotiate and the other is manually fixed to full-duplex -- the auto-negotiating side can't detect a matching signal and falls back to half-duplex.
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