Retroactive testing on Sb5101

[bakageta]

I always thought it was 37mbit including overhead, but close enough if theoretical is 38. Back in the olden days though, I'd see over 30mbit practical fairly often. Large unencrypted ftp transfers like certain distribution networks used didn't really have that much overhead, between 5%-10%. I doubt you'd ever find a node that empty now, and encryption adds overhead, but my usual speed was 33mbit practical, and good days got closer to 35mbit.