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PCAP_LOOKUPNET(3)	   Library Functions Manual	     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 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_ER-
       RBUF_SIZE chars.

SEE ALSO
       pcap(3)

				 25 July 2018		     PCAP_LOOKUPNET(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO

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