i resolved my problem. The guilty was nm-connection-editor who didn't save the gateway configuration, even if i wrote it.
Workaround: - open gconf-editor - search in /system/networking/connections the problematic connections ( 8, in my case) - open the voice ipv4 - in addresses, i replaced the last 0 with the integer conversion of my gateway ip For ip to integer you can see: http://www.arachnoid.com/linux/NetworkManager/ -- Can't use static ip address with network-manager (and thus no VPN connections menu for static users) https://bugs.launchpad.net/bugs/5364 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to knetworkmanager in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs