hi all i was trying to install the Net-Libdnet-0.01 fist i download the .gz file uncompress it under root user i make cp /usr/include/dumbnet.h /usr/include/dnet.h just in case then perl Makefile.PL don't make the install here just go to the newly generated Makefile file chmod 777 Makefile vi Makefile change the parameter ldnet to ldumbnet then make make install and it will work