Hello everyone!
I have installed Ubuntu Server 18.04 in na Hyper-V VM (please, no flack, not my fault...) and this particular network is a VLAN. No other traffic is permitted through the relevant switch, only that one VLAN id (let's say, 39).
So... I have no connectivity to the internet to apt-get the vlan package, but without the vlan package I can't set up eth0.39 to get internet connectivity. A nasty egg/chicken problem.
I can't even download the sole package to another machine on the same subnet, because without the vlan setting on my eth0 I can't even access neighbouring machines.
I have no access to the Hypervisor disks also, so I can't mount them.
What sould I do?