Libpcap-devel
From ES40 Emulator
libpcap is a library to capture and monitor ethernet network traffic. You need the development version, because the ES40 Emulator requires the include files.
To verify if libpcap-devel is installed
rpm -q libpcap-devel libpcap-devel-0.9.8-2.fc9.i386
If the package is not installed, please install as:
yum install libpcap-devel