pcap_lookupnet(3) - NetBSD Manual Pages

Command: Section: Arch: Collection:  
PCAP_LOOKUPNET(3)                                            PCAP_LOOKUPNET(3)




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 -1 on failure. If -1 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(3) 5 April 2008 PCAP_LOOKUPNET(3)
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