static int select_numeric_qtype = 1;
#define PCAP_SNAPLEN 1460
-static char *pcap_device = NULL;
+static char *pcap_device;
static derive_t tr_queries;
static derive_t tr_responses;
static counter_list_t *rcode_list;
static pthread_t listen_thread;
-static int listen_thread_init = 0;
+static int listen_thread_init;
/* The `traffic' mutex if for `tr_queries' and `tr_responses' */
static pthread_mutex_t traffic_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t qtype_mutex = PTHREAD_MUTEX_INITIALIZER;