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.
Get Network Security Tools now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
