PCAP_LOOKUPNET(3PCAP)PCAP_LOOKUPNET(3PCAP)NAMEpcap_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);
DESCRIPTIONpcap_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 VALUEpcap_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 ALSOpcap(3PCAP)ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────────────┤
│Availability │ system/library/libpcap │
├────────────────────┼─────────────────────────┤
│Interface Stability │ Uncommitted │
└────────────────────┴─────────────────────────┘
NOTES
Source for libpcap is available at http://opensolaris.org and at
http://www.tcpdump.org. Documentation is available at
file:///usr/share/man, and http://www.tcpdump.org.
5 April 2008 PCAP_LOOKUPNET(3PCAP)