My problem is relatively simple. My DSL gateway is a Debian box with 3 NICs (2 Network cards and a USB DSL Modem). My SixXS tunnel is up and running perfectly and using ip6tables, I have IPv6 connectivity to and from my clients behing the gateway. What I want to do is setup any IPv6 traffic from the gateway machine to the outside IPv6 world to use the nas0 device (which is used with my PPPoE DSL setup) instead of the sixxs device, so traffic comes from an IP within my subnet, as opposed to traffic coming from my tunnel. Currently, I have to manually specify the nas0 interface when I ssh out to get my desired effect. I suspect it's a simple 1 line command using /sbin/route, but I'm no sure. Any suggestions?