Search was offline for a few because of some changes that where being made, it should work fine again now though. Mobile IPv6 is something you will have to do yourself as SixXS doesn't provide a Home Agent, see Haiku for an excellent interface for that. Also check the Mobile IPv6 HOWTO for quite some information on this subject. One can live without MIPv6 though by simply requesting an AYIYA tunnel for the host you are using. Everywhere you go the tunnel will follow and work (except when 5072 UDP is filtered). This is what I use myself and it hasn't failed once. Mobile IPv6 does become very interesting when you have a full native IPv6 network everywhere you go, but as you are tunneling over an IPv4 network most likely anyway, this doesn't do much good yet.