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    The only time I’ve used Jumbo Frames was between the front and back ends of a news server (early 2000s) because there’s a lot of traffic from the storage to the readers and it made a measurable difference. No issues with routing changes etc. because they had their own subnet for this traffic to avoid saturating other people’s links.

    (edit: We may also have used them from the transit boxes to the storage but my memory is vague there.)