Seems to be a problem with the dhclient. Could you please add the output of:
1) ifconfig # (before and after you restart network) 2) cat /etc/network/interfaces 3) ps aux | grep dhclient # (before and after you restart network) to the bug report? I also found another user with that problem: Feisty networking problem (has to start networking manually) http://ubuntuforums.org/showthread.php?p=2542268 ** Changed in: dhcp3 (Ubuntu) Sourcepackagename: None => dhcp3 -- no internet connection until I restart router https://bugs.launchpad.net/bugs/112590 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs