pcap_lib_version(3PCAP) man page

pcap_lib_version(3PCAP) man page

Updated: 21 October 2025 • View in plain text • Return to Main Contents

NAME

pcap_lib_version - get the version information for libpcap

SYNOPSIS

#include <pcap/pcap.h>

const char *pcap_lib_version(void);

DESCRIPTION

pcap_lib_version() returns a pointer to a string giving information about the version of the libpcap library being used. The string begins with the words “libpcap version“ and a space. Then follows the version, which consists of three dot-separated numbers and the optional “-PRE-GIT” suffix to indicate a development snapshot, same as in the output of pcap-config --version in sufficiently recent libpcap releases. After the version often follow a space and additional text in an arbitrary human-readable form to indicate particular features. For example:

an old release, on any OS: : libpcap version 1.5.3 a newer release on a Linux host: : libpcap version 1.10.4 (with TPACKET_V3) the same, built with DAG support only: : libpcap version 1.10.4 (DAG-only) a development snapshot on a FreeBSD host: : libpcap version 1.11.0-PRE-GIT (64-bit time_t, with zerocopy and netmap support)

SEE ALSO

pcap-config(1), pcap(3PCAP)

COLOPHON

This HTML man page was generated at 15:15:21 GMT, September 13, 2026 from a source man page in “The Tcpdump Group” git repositories using man2html and other tools.