TekSavvy → [DSL] IPv6 Tomato Pitfall

I recently discovered that if you use a router running Tomato, you must set the "Connect Mode" under Basic>Network to "Keep Alive" in order to use IPv6. If it's set to "Connect on Demand" and you enable any flavour of IPv6, you won't even be able to negotiate a PPPoE connection at all. Not even IPv4. The error message in the log will say: "pppd: connect script is required for demand-dialling"

Hope this helps somebody else down the road.

Why would anybody want to NOT use "keep alive"? I believe it was originally designed for phone line dial-up. At that time it was logical. But now I think "keep alive" should be default.

It can be pretty transparent. PPPoE session usually starts in seconds.

max 120km can't wait for that to happen

The unknown script is also transparent