> See also > https://tools.ietf.org/html/draft-vyncke-v6ops-happy-eyeballs-cookie-01 thanks to both of you! i ll dig into horde config if there is another possibility of saving the session state. but is there any explanation to the repeated changing of the ip address from ipv4 to ipv6? thanks! re -- --mur.at leitnergasse 7-12 8010 graz--