The tool is too new for your (old) system. requestbackport was added in version 0.135 of ubuntu-dev-tools. Therefore you need at least Ubuntu 12.04 (precise). You can use the daily build of ubuntu-dev-tools on oneiric [1].
[1] https://code.launchpad.net/~udt-developers/+archive/daily/ ** Changed in: ubuntu-dev-tools (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of MOTU, which is subscribed to ubuntu-dev-tools in Ubuntu. https://bugs.launchpad.net/bugs/1044795 Title: requestbackport tool missing from ubuntu-dev-tools package for Oneiric To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-dev-tools/+bug/1044795/+subscriptions -- universe-bugs mailing list universe-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/universe-bugs