bionic (3) pcap_lookupnet.3pcap.gz

Provided by: libpcap0.8-dev_1.8.1-6ubuntu1.18.04.2_amd64 bug

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(3PCAP)

                                                 3 January 2014                            PCAP_LOOKUPNET(3PCAP)