add kernel version checks to avoid Oopses.

t/test_interfaces.py

@@ -119,8 +119,10 @@ class TestWithDummy(unittest.TestCase):
     def setUp(self):
         self.cleanup = []
 
-    #@test_util.skipUnless(os.getuid() == 0, "Test requires root privileges")
-    @test_util.skip("Test trigger a kernel bug on 2.6.34")
+    @test_util.skipUnless(os.getuid() == 0, "Test requires root privileges")
+    @test_util.skipUnless(
+            test_util.get_linux_ver() >= test_util.make_linux_ver("2.6.35"),
+            "Test trigger a kernel bug on 2.6.34")
     def test_interface_migration(self):
         node = netns.Node()
         dummyname = "dummy%d" % os.getpid()

t/test_util.py

 #!/usr/bin/env python
 # vim:ts=4:sw=4:et:ai:sts=4
 
-import re, subprocess, sys
+import os, re, subprocess, sys
 import netns.subprocess_
 
 def process_ipcmd(str):
@@ -62,6 +62,14 @@ def get_devs_netns(node):
     out = netns.subprocess_.backticks_raise(node, ["ip", "addr", "list"])
     return process_ipcmd(out)
 
+def make_linux_ver(string):
+    match = re.match(r'(\d+)\.(\d+)\.(\d+)(.*)', string)
+    version, patchlevel, sublevel, extraversion = match.groups()
+    return (int(version) << 16) + (int(patchlevel) << 8) + int(sublevel)
+
+def get_linux_ver():
+    return make_linux_ver(os.uname()[2])
+
 # Unittest from Python 2.6 doesn't have these decorators
 def _bannerwrap(f, text):
     name = f.__name__