You may be missing a C-library on your system.

And installing modules by hand can be a lot of tedious work.

Try the CPAN-shell for that:

perl -MCPAN -e shell
and then at the prompt:
cpan[1]> install Net::Packet

[download]

In reply to Re: Net::Libnet Module Installation by morgon
in thread Net::Libnet Module Installation by sagarkha

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