This is getting fairly annoying now, i can't understand what it could be!
I have a Hyper-v Server with a complete fresh install of Ubuntu Server 64bit. When setting up the Virtual Server i chose a legacy network adapter. Once Ubuntu has ran through the install (including dragging some updates from the internet) i log in. Try to do a sudo apt-get update.
All i get is Err's and Failed to fetch error messages. The virtual network card in Ubuntu is set to DHCP, it has the correct lease from the DHCP server.
Pinging the router fails too, although this is fine from a windows pc (with a lease from the same DHCP server). We haven't any proxy server here either.
Does anyone know what it could be?