Comment 8 for bug 1547545

@apanchenko, I'm not sure I understood your comment. We are rebuilding ifupdown with this patch:
https://launchpadlibrarian.net/240329706/trusty_ifupdown_0.7.47.2ubuntu4.4.debdiff

As to the pinning - it is a bad idea to downgrade package versions, especially when a fix is available. Since recursion detection was added for a reason, and it will be present in the package when upstream bug is fixed, it is better to preserve it.