I encountered this bug while using debian-installer to install Ubuntu Desktop on an IPv6 network. If using preseeding to automate an install of Ubuntu Desktop, the following command can be added to preseed/late_command as a quick workaround:
in-target sed -i '/^iface eth0 /s/^/#NetworkManager#/' /etc/network/interfaces -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1005091 Title: NetworkManager does not manage device after install on IPv6 network Status in “network-manager” package in Ubuntu: Confirmed Bug description: When installing Ubuntu Desktop 12.04 with debian-installer on a network with IPv6 enabled, NetworkManager disabled network interfaces from automatically configuring via DHCP in /etc/network/interfaces, but does not disable them from automatically configuring IPv6. This prevents NetworkManager from taking over control and managing the network interface because it still appears to be maintained by the ifupdown, but has IPv4 disabled from configuring at all. The resultant /etc/network/interfaces file looks like this: # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 #NetworkManager#iface eth0 inet dhcp # This is an autoconfigured IPv6 interface iface eth0 inet6 auto Because there is a non-commented iface line for eth0, NetworkManager never takes over management. My system is: Description: Ubuntu 12.04 LTS Release: 12.04 network-manager 0.9.4.0-0ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1005091/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
