without LIS (https://www.microsoft.com/en-us/download/details.aspx?id=55106) no connection no fun (at least on my HyperV16).
To Install LIS 4.2.8 download the ISO from MS and attached it as CDROM to the NS virtual maschine and mount it after boot.
mount /dev/cdrom /media
In case you already have an old version installed then remove it from NS.
Update to the latest kernel 3.10.0-957.1.3 and reboot to ensure the kernel is active.
In case you can not ssh into NS anymore then use Hyper-V Manager and connect from there to the NS virtual machine.
Mount CDROM/iso again.
reboot (and detach cdrom).
You should be done.
I will no longer update the kernel from the software center since it most probably will damage the system until the corresponding LIS package is available.
May be the developers @dev_team can add a checkbox so that we can deselect the update of the kernel.