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NetBSD 6.1.5 - man page for pcap_lookupnet (netbsd section 3)

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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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