sand_man
Honorary Master
Then you didn't follow that KB article correctly. They give you example numbers to use, but you still need to test with ping until you dont get the fragmented message and then add the 28. Only then you know what the optimal value is.
Using an automatic value is usually better when it works.
Seemed quite straight forward but it's possible I bungled it...
To recap... the router currently has MTU set at 1480 (default). 1448 on yahoo.com appears to be @ 0% packet loss (see test below). I should alter router MTU rate to 1476?

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