/// <summary>
/// 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.
/// </summary>
/// <param name="p">A <see cref="IntPtr"/></param>
/// <returns>Returns 0 on success without warnings, a non-zero positive value on success with warnings, and a negative value on error. A non-zero return value indicates what warning or error condition occurred.</returns>
internal static int pcap_activate(IntPtr /* pcap_t* */ p)
{
return(UseWindows ? Windows.pcap_activate(p) : Unix.pcap_activate(p));
}