[~]$ cpan -f -i NET:TELNET
Going to read '/home/emarwja/.cpan/Metadata'
  Database was generated on Thu, 22 Jun 2017 02:17:02 GMT
Warning: Cannot install NET:TELNET, don't know what it is.
Try the command

    i /NET:TELNET/

to find objects with matching identifiers.
[~]$
[~]$ cpan -f -i NET:SSH
Going to read '/home/emarwja/.cpan/Metadata'
  Database was generated on Thu, 22 Jun 2017 02:17:02 GMT
Warning: Cannot install NET:SSH, don't know what it is.
Try the command

    i /NET:SSH/

to find objects with matching identifiers.
[~]$