Hi,

Say I have two sites, each with Vigor 2860 routers. The upstream/ISP WAN connections are IPv4.

The routers are connected with an IPsec tunnel enabling v4 connectivity between sites. (Routed lan's, each site has a different v4 subnet)

Is there any way with this hardware to enable ipv6 connectivity; not to the internet but between the two lan's using the existing ipsec tunnel.

Could I perhaps set up in any way a 6in4 tunnel between the two drayteks' v4 lan interfaces?

X

I don't see why a 6-in-4 can't go through the VPN but I'm not sure the router can do it for you.