Name
pcap_lookupnet — Prototype: int pcap_lookupnet(const char *device, bpf_u_int32 *netp, bpf_u_int32
*maskp, char *errbuf)
Synopsis
Purpose: pcap_lookupnet
returns the network
address and network mask of the device supplied in the device
parameter. The function returns 0
if successful
and netp
and maskp
point to the
network interface address and netmask, respectively. If an error
occurs, pcap_lookupnet
returns
-1
, and errbuf
is populated
with a human-readable error message. You can find an example of using
the pcap_lookupnet
function in the Section 10.2.4
section earlier in this chapter.
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