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22 .TH PCAP_LOOKUPNET 3PCAP "5 April 2008"
24 pcap_lookupnet \- find the IPv4 network number and netmask for a device
28 #include <pcap/pcap.h>
33 char errbuf[PCAP_ERRBUF_SIZE];
37 int pcap_lookupnet(const char *device, bpf_u_int32 *netp,
39 bpf_u_int32 *maskp, char *errbuf);
44 is used to determine the IPv4 network number and mask
45 associated with the network device
56 returns 0 on success and \-1 on failure.
59 is filled in with an appropriate error message.
61 is assumed to be able to hold at least