Hi folks

I desperately need your help. I was looking all evening for a solution to my problem. I'm using Perl 5.10.1 on a 64Bit Ubuntu.

I wanted to play around with Net::Pcap, so I have installed it the command apt-get install libnet-pcap-perl

For my test, I wanted to use an example shown on the CPAN page of Net::Pcap

#!/usr/bin/perl -w

use Net::Pcap;


my $err = '';
my $dev = pcap_lookupdev(\$err);  # find a device

# open the device for live listening
my $pcap = pcap_open_live($dev, 1024, 1, 0, \$err);

# loop over next 10 packets
pcap_loop($pcap, 10, \&process_packet, "just for the demo");

# close the device
pcap_close($pcap);

sub process_packet {
    my($user_data, $header, $packet) = @_;
    # do something ...
}
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If I try to run that script, I get this Answer: "Undefined subroutine &main::pcap_lib_version called at ./test.pl line 7"

However, if I expand the pcap-commands to e.g my $dev = Net::Pcap::pcap_lookupdev(\$err); I don't get any error. It just does nothing because the script is not finished yet, but that's not the point.

Has anyone an Idea what my problem is?

SOLUTION: The funtions need to be exported by request  use Net::Pcap qw(:funtions); Thank you Corion!