Proxmox Host only IPV6 and CT/VM only IPV4

Hello,

I've got a question concerning Proxmox using IPV6 on the host system.
I Installed Proxmox via this tutorial on top of a new installed Debian 7: http://pve.proxmox.com/wiki/Install_..._Debian_Wheezy
Everything is working and setup properly.
I should mention that i was searching for a hint on how to achieve this now quite a while. Hopefully someone can help me here.

I need my Proxmox Host Server to be reachable only via IPV6 since i´ve got two IPV4 addresses which I need to use for the clients.
Can anyone tell me how to achieve this? Do I have to route somehow the IPV4 to the clients and how to set only IPV6 on the host system?

Sorry for this somehow basic question but I´m quite new to this whole server and virtualisation thing and would appreciate any help.

Thanks in advance