Man page of PCAP_LOOKUPNET

Section: Misc. Reference Manual Pages (3PCAP)
Updated: 25 July 2018
Return to Main Contents

This man page documents libpcap version 1.11.0-PRE-GIT.

Your system may have a different version installed, possibly with some local modifications. To achieve the best results, please make sure this version of this man page suits your needs. If necessary, try to look for a different version on this web site or in the man pages available in your installation.
 

NAME

pcap_lookupnet - find the IPv4 network number and netmask for a device  

SYNOPSIS

#include <pcap/pcap.h>

char errbuf[PCAP_ERRBUF_SIZE];

int pcap_lookupnet(const char *device, bpf_u_int32 *netp,

        bpf_u_int32 *maskp, char *errbuf);
 

DESCRIPTION

pcap_lookupnet() is used to determine the IPv4 network number and mask associated with the network device device. Both netp and maskp are bpf_u_int32 pointers.  

RETURN VALUE

pcap_lookupnet() returns 0 on success and PCAP_ERROR on failure. If PCAP_ERROR is returned, errbuf is filled in with an appropriate error message. errbuf is assumed to be able to hold at least PCAP_ERRBUF_SIZE chars.  

SEE ALSO

pcap(3PCAP)


This document was created by man2html, using the manual pages from "The Tcpdump Group" git repositories.
Time: 10:43:41 GMT, October 05, 2021 [Valid HTML 4.01] [Valid CSS]