According to the specs on the draytek vigor 3900's page there is a "Later firmware upgrade (Schedule TBA)"

will this firmware address IPv6 Tunnels for setting up via SIXXS like the 2850 ?

i add a second wish for this Vigor FW...:

the possibility to manage independently the 2 WANs bandwidth and not only a unified control (that is less useful IMHO)

A few more:

To be able to use hostnames as well as IP addresses for VPN remote hosts.

An enable unicast option on VPN profiles.
An enable multicast option on VPN profiles.

The ability to apply Firewall filters to VPN profiles.

Replicate the simplicity of the 2920's VPN configuration on the 2960 !

Azzola wrote: the possibility to manage independently the 2 WANs bandwidth and not only a unified control (that is less useful IMHO)

Can you elaborate on what you mean and why you'd need that?

desc wrote: The ability to apply Firewall filters to VPN profiles.

You can do that, but you do it via IP filtering based on source or dest. IP address I think.

Any news on IPv6 for the 3900 ?? for Tunnel service like SiXXS