No, you're not alone, I'm facing exactly this problem, too. I used the following settings:
IP 131.173.12.227 (yes, this is a public address) Netmask 255.255.255.0 GW 131.173.12.254 NS 131.173.245.9 When selecting the connection, knetworkmanager prints: Activate Connection /org/freedesktop/NetworkManagerSettings/Connection/2 on Device /org/freedesktop/Hal/devices/net_00_00_f0_7a_97_d0 And syslog says: Nov 3 14:02:40 sam NetworkManager: <WARN> connection_get_settings_cb(): connection_get_settings_cb: Invalid connection: 'NMSettingIP4Config' / 'addresses' invalid: 1 Nov 3 14:02:40 sam NetworkManager: <WARN> connection_get_settings_cb(): connection_get_settings_cb: Invalid connection: 'NMSettingIP4Config' / 'addresses' invalid: 1 Nov 3 14:02:57 sam NetworkManager: connection_updated_cb: assertion `old_connection != NULL' failed I've replaced knetworkmanager by nm-applet which works fine with the same settings, but of course this is not a real solution but a really dirty workaround. -- unable to configure a fixed ip on wired interface on knetworkmanager (intrepid) https://bugs.launchpad.net/bugs/279409 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to knetworkmanager in ubuntu. -- kubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs