I think I understand it now - knetworkconf does not call Ubuntu scripts directly and therefore dhclient is not called as it probably assumes that dhcp is daemon running all the time. I will check how to address this properly.
** Changed in: kdeadmin knetworkconf (Ubuntu) Status: Needs Info => In Progress -- Bringing up a interface problem https://launchpad.net/bugs/38578 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs