Comment 11 for bug 497299

Thank you for reporting this bug and helping to improve Ubuntu.

As noted in comment #6, this happens due to a broken interface configuration. It's undesirable to have such a behavior change for users in an SRU, but upstart itself is not behaving incorrectly here; there is no bug to be fixed in upstart. The most we can do is treat this as a blocker for the SRU publishing. I don't think that's the right tradeoff to make, but I leave that up to the member of the SRU team who will be approving the package.