It is normal. Even if you use some other modem/
router
same result will be shown. by DSL.
In DRTCP lower the value to say 1460 and re test..
( assume registry entries are set for 1492 )
Raising MTU from 1480 with WinXP, using *built in* PPPoE connection software. Tweaking FAQ - dslreports.com updated >
Raising MTU from 1480 with WinXP, using *built in* PPPoE connection software. (#2252)
As of 10/15/01, there is no known way to raise MTU in WinXP from 1480. This issue is seen only by WinXP users who are connecting with the built-in PPPoE connection software. If you change to RASPPPoE, or use a router instead, your MTU should then default to 1492. RASPPPoE is popular, free and less problematic than WinPoet (another choice).
This small difference (12 bytes) in MTU is negligible, however, and should cause no concern. Check back from time to time, though, for a "fix."
Also you can run the tweak test tool from same site. for more "gyan"!