This should have been closed again some time ago -- the default since Oneiric is to try IPv6 in Automatic mode; although its success is not required to bring up interfaces.
** Changed in: network-manager (Ubuntu) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/761558 Title: Default to enabling IPv6 addresses, but set to optional to bring up devices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/761558/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs