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Man Pages


Manual Reference Pages  -  PCAP_LOOKUPNET (3)

NAME

pcap_lookupnet - find the IPv4 network number and netmask for a device

CONTENTS

Synopsis
Description
Return Value
See Also

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)
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--> PCAP_LOOKUPNET (3) 5 April 2008

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