After looking into why only 1 of my linux VM's would get a dhcp6 assigned ipv6 address I noticed that all my ubuntu VM's had the same DUID. Since dhcp6 does not use mac addresses but the hosts DUID to identify the host all my ubunto vm's would get the same ip6 address assigned to them. The fix is to change the file /etc/systemd/networkd.conf from the default: [DHCPv6] #DUIDType=vendor #DUIDRawData= to [DHCPv6] DUIDType=link-layer #DUIDRawData= Since the host ID that the DUID is generated from is set on the first boot of a linux install all images made by parallels preconfigured images would have the same DUID. The change above changed the DUID to be based on the mac address of the network card and therefore guaranteeing a different DUID for each VM. I would like to ask parallels to include this change to their prebuilt linux images.
