If ifup says "interface $IF already configured", but it's really not configured on boot, then perhaps the file /var/run/network/ifstate is stale. ifdown $IF; ifup $IF fixes the problem, but if the problem persists, check that file to see if that interface is listed before /etc/init.d/networking runs. Try a live or install CD, or boot Ubuntu with 'init=/bin/bash' (and no splash) on the kernel commandline.
If 'ifconfig' lists the interface but it does not work, then must have been configured once already. -- network has to be started each time system is booted https://bugs.launchpad.net/bugs/50099 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