-

commit 0fced709be6924d15a3350999defc20420bbb801
Author: Raul Gutierrez S <rgs@twitter.com>
Date:   Tue Oct 7 09:58:16 2014 -0700

    Handle failed to open interface errors
    
    Signed-off-by: Raul Gutierrez S <rgs@twitter.com>

diff --git a/zktraffic/base/sniffer.py b/zktraffic/base/sniffer.py
index 2106b8a..37cf5a6 100644
--- a/zktraffic/base/sniffer.py
+++ b/zktraffic/base/sniffer.py
@@ -21,6 +21,7 @@ from collections import defaultdict
 import logging
 import os
 import signal
+import socket
 import struct
 from threading import Thread
 
@@ -163,6 +164,8 @@ class Sniffer(Thread):
     try:
       log.info("Setting filter: %s", self.config.filter)
       sniff(filter=self.config.filter, store=0, prn=self.handle_packet, iface=self.config.iface)
+    except socket.error as ex:
+      log.error("Error: %s, device: %s", ex, self.config.iface)
     finally:
       log.info("The sniff loop exited")
       os.kill(os.getpid(), signal.SIGINT)