I think apt-get does it correctly. For the package is already downloaded (it is installed, a few steps further), and as there is no newer version, there's no point in downloading it. If you want to get the .deb, you can use the --reinstall option to apt-get, or you can take a look at the dpkg-repack utility.
- Bug#115953: apt-get -d install <package> ... Janos Holanyi
- Re: Bug#115953: apt-get -d install <pac... Gergely Nagy
- Re: Bug#115953: apt-get -d install <... Jason Gunthorpe
- Bug#115953: apt-get -d install <pac... János Holányi
- Re: Bug#115953: apt-get -d install... Jason Gunthorpe
- Re: Bug#115953: apt-get -d ins... János Holányi
- Processed: Re: Bug#115953... Debian Bug Tracking System
- Re: Bug#115953: apt-get -... Jason Gunthorpe
- Re: Bug#115953: apt-g... János Holányi
- Processed: Re: Bu... Debian Bug Tracking System
- Bug#115953: marked as done (apt-get -d ins... Debian Bug Tracking System
- Bug#115953: marked as done (apt-get -d ins... Debian Bug Tracking System

