From eef43402b6d06380103c7563586be0e549590047 Mon Sep 17 00:00:00 2001
From: cody burkard <cody@onlab.us>
Date: Sat, 27 Sep 2014 03:38:05 -0700
Subject: [PATCH] check for vlan dependency
---
examples/vlanhost.py | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/examples/vlanhost.py b/examples/vlanhost.py
index 00f63690..97c6e8e3 100755
--- a/examples/vlanhost.py
+++ b/examples/vlanhost.py
@@ -26,6 +26,8 @@
from mininet.node import Host
from mininet.topo import Topo
+from mininet.util import quietRun
+from mininet.log import error
class VLANHost( Host ):
@@ -107,6 +109,11 @@ def exampleCustomTags( vlan ):
setLogLevel( 'info' )
+ if not quietRun( 'which vconfig' ):
+ error( "Cannot find command 'vconfig'\nThe packge",
+ "'vlan' is required in Ubuntu or Debian,",
+ "or 'vconfig' in Fedora\n" )
+ exit()
try:
vlan = int( sys.argv[ 1 ] )
except Exception:
--
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