IPv6 is still in an experimental state at DESY making it neccessary to set the IPv6 addresses and route manually.

Desktop Machines

Our office desktop machines have addresses within the subnet

2001:638:700:2089::/64

to find out your actual IP you have to take the last byte of your IPv4 address and convert it to hex XY. From this you can build the complete IPv6 address. Add it to your eth0 interface doing:

ifconfig eth0 add 2001:638:700:2089::1:XY/64

you then also need to add the configure the routing:

route -A inet6 add default gw 2001:638:700:2089::ff

VMs

The VMs reside within the subnet

2001:638:700:1048::/64

Again find out the last byte of your IPv4 address and convert it to the hexvalue XY.

ifconfig eth0 add 2001:638:700:1048::1:XY/64

you then also need to add the configure the routing:

route -A inet6 add default gw 2001:638:700:1048::ff