I fixed the second issue by adding a tiny, super-fast delay. Boom! No more "ENOBUFS" error!
Regarding the initial issue, do you believe that modifying the appropriate value and adjusting the pyramid of doom logic for vmnet_read/vmnet_write to accommodate multiple packets simultaneously would be an effective solution?
i3z
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Additionally, I've observed frequent occurrences of TCP Out-Of-Order packets, Duplicate ACKs, and Fast Retransmissions while monitoring of a standard bridged interface using VZBridgedNetworkDeviceAttachment only.