evening all , found an related article about the power consumtion saving in ip6. - Up to 300 Megawatt Worth of Keepalive Messages to be Saved by IPv6? http://www.circleid.com/posts/81072_megawatts_keepalive_ipv6/ http://www.niksula.hut.fi/~peronen/publications/haverinen_siren_eronen_vtc20... still interested in other links and publications regards Marc -- "Use your imagination not to scare yourself to death but to inspire yourself to life." Les enfants teribbles - research and deployment Marc Manthey - head of research and innovation Hildeboldplatz 1a D - 50672 Köln - Germany Tel.:0049-221-3558032 Mobil:0049-1577-3329231 jabber :marc@kgraff.net blog : http://www.let.de ipv6 http://www.ipsix.org xing : https://www.xing.com/profile/Marc_Manthey