C:WindowsSystem32> netsh.exe interface ipv4 show interface
Idx Met MTU State Name
1 50 4294967295 connected Loopback Pseudo-Interface 1 12 50 1500 disconnected Drahtlosnetzwerkverbindung 15 5 1500 disconnected Mobile Breitbandverbindung 11 10 1500 connected LAN-Verbindung 14 50 1477 disconnected Bluetooth-Netzwerkverbindung 16 10 1350 disconnected LAN-Verbindung* 3
C:WindowsSystem32>
C:WindowsSystem32> netsh interface ipv4 set subinterface mtu=1400 store=persistent
How to enable PMTU: https://technet.microsoft.com/en-us/library/cc957539.aspx
http://www.duckware.com/blog/how-windows-is-killing-internet-download-speeds/index.html
http://blog.schaefer-it.net/2009/11/25/windows-7-mtu-fur-netzwerkadapter-einstellenig/
netsh interface tcp show global netsh interface tcp show heuristics netsh interface tcp set global autotuningl=normal netsh interface tcp set global autotuning=disabled netsh int tcp set heuristics disabled