Hi guys, I posted this in the ND USB Mod thread but didn't get any eyeballs (because the thread is now so huge) and thought I'd try a thread of my own. I just moved from a WRT54G running stock Tomato 1.28 (and every other version before that) to running the ND USB mod (build 47) on a WRT160n v3. All in all it was a very smooth transition, and everything is working just as it was before. I think. The one thing I'm having problems with is allowing the ICMP ping in the Firewall, which I need enabled to run an IPv6 tunnel (from tunnelbroker.net). I've ticked the box and it seems to be working but whenever my IP address changes (my ISP gives me a dynamic address so it does this fairly often) and I update the tunnel endpoint to the new IP, it seems like the ICMP request fails: the tunnel just stops working. This never happened running the "old" Tomato on my WRT54G. So I guess my question is, are there any differences in this firmware that would explain this behaviour? Any other reasons this might be happening?