... between those two; however, we prefer using Linux as much as we can because of the lower costs and higher application exibility.The biggest disadvantage in using Linux is that there are fewer options ... marketing, and commercial people, but it's not the Headquarters of the ISP.••••Chapter 8 [ 237 ]1.1. 48. 0/20 and 1.1.96.0/20 being used in City-2 will be advertised by the Core-4 router, and ... Net::Pcap::compile($pcap, \ $filter, $filter_ str, $optimize, $netmask) == -1) { $err = Net::Pcap::geterr($pcap); die "Invalid filter: $filter_ str (error was: $err)\n";} else { Net::Pcap::setfilter($pcap,...