I keep a local CDROM with the CPAN archive at home, and make it work by editing CPAN::Config.pm

The only line you need to change is

'urllist' => [q[file://mnt/cdrom/CPAN]];
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And it will only seek from that cdrom. You might have to do some more work to get it working without any CPAN bookkeeping files though.

-- 
Joost       downtime n. The period during which a system
            is error-free and immune from user input.
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