So last night i got really bored, so i tried to integrate VLANs in my existing Xen4 setup.
While googling for solutions, i only found things where i'd have to statically allocate VLANs for every customer on every host through xend-config.sxp network-script.
This also meant, that if i had a new customer vlan which i want to add to my host, i'd have to either restart xend or run
/etc/xen/scripts/network-bridge start netdev=eth1 vlan=5
Since this is absolutely not my style, i started investigating. Turns out there is a much better way to do so!