From 58d529f6ab0e6ced9e836d00b79b5a565a3bad00 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ha=C3=AFssam=20Kaj?= <hkaj@users.noreply.github.com>
Date: Thu, 20 Apr 2017 21:43:29 +0200
Subject: [PATCH] [docker] fix net metrics in host mode (#3313)

---
 utils/dockerutil.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/utils/dockerutil.py b/utils/dockerutil.py
index 782ae2d59c..6571bc051e 100644
--- a/utils/dockerutil.py
+++ b/utils/dockerutil.py
@@ -482,6 +482,12 @@ def get_container_network_mapping(cls, container):
 
             docker_gateways = {}
             for netname, netconf in container['NetworkSettings']['Networks'].iteritems():
+
+                if netname == 'host' or netconf.get(u'Gateway') == '':
+                    log.debug("Empty network gateway, container %s is in network host mode, "
+                        "its network metrics are for the whole host." % container['Id'][:12])
+                    return {'eth0': 'bridge'}
+
                 docker_gateways[netname] = struct.unpack('<L', socket.inet_aton(netconf.get(u'Gateway')))[0]
 
             mapping = {}