03-21-2019
Why doesn't it do what you want / need? Where does it fail?
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Hello everybody !
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...
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...
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...
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LEARN ABOUT NETBSD
pcap_activate
PCAP_ACTIVATE(3) Library Functions Manual PCAP_ACTIVATE(3)
NAME
pcap_activate - activate a capture handle
SYNOPSIS
#include <pcap/pcap.h>
int pcap_activate(pcap_t *p);
DESCRIPTION
pcap_activate() is used to activate a packet capture handle to look at packets on the network, with the options that were set on the handle
being in effect.
RETURN VALUE
pcap_activate() returns 0 on success without warnings, PCAP_WARNING_PROMISC_NOTSUP on success on a device that doesn't support promiscuous
mode if promiscuous mode was requested, PCAP_WARNING on success with any other warning, PCAP_ERROR_ACTIVATED if the handle has already been
activated, PCAP_ERROR_NO_SUCH_DEVICE if the capture source specified when the handle was created doesn't exist, PCAP_ERROR_PERM_DENIED if
the process doesn't have permission to open the capture source, PCAP_ERROR_RFMON_NOTSUP if monitor mode was specified but the capture
source doesn't support monitor mode, PCAP_ERROR_IFACE_NOT_UP if the capture source is not up, and PCAP_ERROR if another error occurred. If
PCAP_WARNING or PCAP_ERROR is returned, pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display a message
describing the warning or error. If PCAP_WARNING_PROMISC_NOTSUP, PCAP_ERROR_NO_SUCH_DEVICE, or PCAP_ERROR_PERM_DENIED is returned,
pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display an message giving additional details about the prob-
lem that might be useful for debugging the problem if it's unexpected.
SEE ALSO
pcap(3)
5 April 2008 PCAP_ACTIVATE(3)