PPTPD on IPv6 and public IPv4

Hi,

Please let me know if is possible to run pptpd daemon via ipv6 only 
(e.g. to listen on IPv6 address and assign IPv6 address to clients). 
Since IPv6 NAT is not possible in iptables, the clients will have to 
receive directly IPv6 public address (unicast)? Please show if there is 
any step by step tutorial or explanation for easy understanding this.

In IPv4 can something be done to assign direct public IPv4 addresses 
to clients? Not RFC1918 addresses and SNAT / DNAT / MASQUERADE for 
routing internet traffic.

thanks!
s7r


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