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RV120W wrong length (generated?) in PPPoE packets?

I'm investigating an issue we have with video conferencing. I'm now  at the UDP packet level and generated traces with the RV120W diagnostic  tools to perhaps get a hint on our conferencing issue. When inspecting  the trace, Wireshark reported that all incoming packages have a length  error in the PPPoE frame.

I also looked at the same trace package with the MS Network tool. Both  tools reported the same (short) length in the PPPoE header and also an equal and  a much larger length in the payload, the UDP header (One packet analysis, displaying both lengths is attached).

Question: is this erroneous length a problem that  would have consequences outside the router, for example for our  conferencing system?

== edit running firmware v1.0.2.6

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