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That would be indicative of a failing network device. The frame data seems to suggest that a (residual?) 32 bit word is (assumed to be) present in a frame descriptor block in the network driver. The networking hardware makes this a valid length Ethernet frame by padding with zeros. Disclaimer: this are no more than educated guesses, but fitting the (limited) evidence.

To be able to find this device you would have to backtrack through the network ports, looking for this type of frames.