Fix suricata start when no interface is given.

When no interface was specified on command line, the workers and
single mode where not able to start due to the fact there was no
registered interfaces.

src/runmode-pfring.c

@@ -38,6 +38,7 @@
 #include "util-cpu.h"
 #include "util-affinity.h"
 #include "util-runmodes.h"
+#include "util-device.h"
 
 static const char *default_mode_auto = NULL;
 static const char *default_mode_autofp = NULL;
@@ -308,7 +309,6 @@ int PfringConfLevel()
     if (ConfGet("pfring.interface", &def_dev) != 1) {
         return PFRING_CONF_V2;
     } else {
-        SCLogInfo("Using 1.0 style configuration for pfring");
         return PFRING_CONF_V1;
     }
     return PFRING_CONF_V2;
@@ -323,12 +323,15 @@ static int GetDevAndParser(char **live_dev, ConfigIfaceParserFunc *parser)
     if (PfringConfLevel() > PFRING_CONF_V1) {
         *parser = ParsePfringConfig;
     } else {
+        SCLogInfo("Using 1.0 style configuration for pfring");
         *parser = OldParsePfringConfig;
         /* In v1: try to get interface name from config */
-        if (live_dev == NULL) {
+        if (*live_dev == NULL) {
             if (ConfGet("pfring.interface", live_dev) == 1) {
                 SCLogInfo("Using interface %s", *live_dev);
+                LiveRegisterDevice(*live_dev);
             } else {
+                SCLogInfo("No interface found, problem incoming");
                 *live_dev = NULL;
             }
         }
@@ -494,7 +497,7 @@ int RunModeIdsPfringWorkers(DetectEngineCtx *de_ctx)
         exit(EXIT_FAILURE);
     }
 
-    SCLogInfo("RunModeIdsPfringSingle initialised");
+    SCLogInfo("RunModeIdsPfringWorkers initialised");
 #endif /* HAVE_PFRING */
 
     return 0;