REGEDIT4

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
"TcpWindowSize"=dword:0000ff3c
"EnablePMTUDiscovery"=dword:00000000
"EnablePMTUBHDetect"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NTSPPPOE\Parameters\Tcpip]
"MTU"=dword:000005d4