Hi
I'm trying to debug a connectivity issue on a Windows 2008R2 system, and I'd like to carry out some tests with different MTUs. According to the docs at http://technet.microsoft.com/en-us/library/cc753156(v=ws.10).aspx#BKMK_setinterface I issue this command: C:\Windows\system32>netsh interface ipv6 set interface "Local Area Connection" mtu=1400 Ok. I then see: C:\Windows\system32>netsh interface ipv6 show interfaces Idx Met MTU State Name --- ---------- ---------- ------------ --------------------------- 1 50 4294967295 connected Loopback Pseudo-Interface 1 10 10 1400 connected Local Area Connection This works for a while, but after a minute or so it changes back to the default: C:\Windows\system32>netsh interface ipv6 show interfaces Idx Met MTU State Name --- ---------- ---------- ------------ --------------------------- 1 50 4294967295 connected Loopback Pseudo-Interface 1 10 10 1500 connected Local Area Connection The default netsh behavior should be to save it persistently, but upon reboot the MTU is always 1500. Any ideas what might be causing this? I just tried out a Windows 7 machine and that seem to remember what it's being told with netsh. Thanks!! -- Dick Visser System & Networking Engineer TERENA Secretariat Singel 468 D, 1017 AW Amsterdam The Netherlands
