Trying out a hypothesis on the travis failures.

.travis.yml

@@ -1,9 +1,16 @@
 language: bash
-sudo: false
+sudo: required
 env:
 - DISTRO=ubuntu-trusty
 
 before_script:
+    - sudo ls -l /sys/class/net
+    - sudo ls -l --dereference /sys/class/net 
+    - sudo ls -lad /sys/class
+    - sudo ls -lad /sys/devices
+    - sudo chmod a+x /sys
+    - sudo chmod a+rx /sys/class
+    - sudo chmod a+r /sys/class/net
     - curl -L "https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/shunit2/shunit2-2.1.6.tgz" | tar zx
 
 addons: