My Netgear router is sufficiently elderly that, although it does at least run Linux and has some pretence at available source code for its firmware and such, OpenWRT doesn't really support it (I think it works but without wifi, or something amazingly useful like that) and building modified versions of the manufacturer's firmware is rather more work than I'm prepared to go to. I already have a separate server that all my devices are configured to treat as the gateway anyway (since otherwise using a VPN was excessively painful), so I made that be the HE endpoint.

tunnelbroker.net is indeed very nice.

I think I'm going to switch to A&A soon, though, as they've actually got to the point of having a real native IPv6 consumer router now ...