Hello,
I managed to install VYATTA 5.0.2 on Hyper-V using so called legacy network adapters - it works fine with one exception, legacy network adapters have 100mbit and cause very high CPU load.
There are linux integrtions components for Hyper-V that enable support for native adapters (https://connect.microsoft.com/site/sitehome.aspx?SiteID=495&wa=wsignin1.0). Has anyone tried that or at least can point the direction I should go to get them compiled and running with VYATTA kernel?
Thanks! :)

There a couple issues:
1. Msft hyper-v driver is not open source, and redistributing it would require agreement with them.
2. Hyper-V driver is out of date with current kernel API's and will not build on current kernel.