From 778267aa7590cf5ae8b30f0e77ba8ea4943530ca Mon Sep 17 00:00:00 2001
From: cody burkard <cody@onlab.us>
Date: Wed, 1 Oct 2014 23:05:34 -0700
Subject: [PATCH] if there are no interfaces to ping, there are no packets sent
---
mininet/net.py | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mininet/net.py b/mininet/net.py
index fd0719b1..cd9b9885 100755
--- a/mininet/net.py
+++ b/mininet/net.py
@@ -562,8 +562,11 @@ def ping( self, hosts=None, timeout=None ):
opts = ''
if timeout:
opts = '-W %s' % timeout
- result = node.cmd( 'ping -c1 %s %s' % (opts, dest.IP()) )
- sent, received = self._parsePing( result )
+ if dest.intfs:
+ result = node.cmd( 'ping -c1 %s %s' % (opts, dest.IP()) )
+ sent, received = self._parsePing( result )
+ else:
+ sent, received = 0, 0
packets += sent
if received > sent:
error( '*** Error: received too many packets' )
--
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