diff -uNr cloud-init-0.7.5__orig/cloudinit/sources/DataSourceOpenNebula.py cloud-init-0.7.5/cloudinit/sources/DataSourceOpenNebula.py
--- cloud-init-0.7.5__orig/cloudinit/sources/DataSourceOpenNebula.py	2014-04-01 19:26:07.000000000 +0100
+++ cloud-init-0.7.5/cloudinit/sources/DataSourceOpenNebula.py	2014-07-29 20:20:20.286992747 +0100
@@ -29,6 +29,7 @@
 import pwd
 import re
 import string  # pylint: disable=W0402
+#import sys
 
 from cloudinit import log as logging
 from cloudinit import sources
@@ -149,7 +150,7 @@
 
 class OpenNebulaNetwork(object):
     REG_DEV_MAC = re.compile(
-                    r'^\d+: (eth\d+):.*?link\/ether (..:..:..:..:..:..) ?',
+                    r'^\d+: (\w+):.*?link\/\w+ (..:..:..:..:..:..) ?',
                     re.MULTILINE | re.DOTALL)
 
     def __init__(self, ip, context):
@@ -158,7 +159,11 @@
         self.ifaces = self.get_ifaces()
 
     def get_ifaces(self):
-        return self.REG_DEV_MAC.findall(self.ip)
+        list = self.REG_DEV_MAC.findall(self.ip)
+        ifaces = dict()
+        for l in list:
+            ifaces[l[1]] = l[0]
+        return ifaces
 
     def mac2ip(self, mac):
         components = mac.split(':')[2:]
@@ -206,6 +211,15 @@
         else:
             return None
 
+    def get_context_interfaces(self):
+
+        def device_mac(t): return re.match(r"ETH\d+_MAC", t)
+
+        mac_vars = filter(device_mac, self.context.keys())
+
+        context_interfaces = [v.split('_')[0] for v in mac_vars]
+        return context_interfaces
+
     def gen_conf(self):
         global_dns = []
         if 'DNS' in self.context:
@@ -216,27 +230,37 @@
         conf.append('iface lo inet loopback')
         conf.append('')
 
-        for i in self.ifaces:
-            dev = i[0]
-            mac = i[1]
+        context_interfaces = self.get_context_interfaces()
+
+        if len(context_interfaces):
+            try:
+                (out, _err) = util.subp(["systemctl", "stop", "NetworkManager"])
+                (out, _err) = util.subp(["systemctl", "disable", "NetworkManager"])
+            except util.ProcessExecutionError:
+                util.logexc(LOG, "Disable NetworkManager command failed")
+
+        for interface in context_interfaces:
+            mac = self.context[interface+"_MAC"]
+            dev = self.ifaces[mac]
+
             ip_components = self.mac2ip(mac)
 
             conf.append('auto ' + dev)
             conf.append('iface ' + dev + ' inet static')
-            conf.append('  address ' + self.get_ip(dev, ip_components))
-            conf.append('  network ' + self.get_network(dev, ip_components))
-            conf.append('  netmask ' + self.get_mask(dev))
+            conf.append('  address ' + self.get_ip(interface, ip_components))
+            conf.append('  network ' + self.get_network(interface, ip_components))
+            conf.append('  netmask ' + self.get_mask(interface))
 
-            gateway = self.get_gateway(dev)
+            gateway = self.get_gateway(interface)
             if gateway:
                 conf.append('  gateway ' + gateway)
 
-            domain = self.get_domain(dev)
+            domain = self.get_domain(interface)
             if domain:
                 conf.append('  dns-search ' + domain)
 
             # add global DNS servers to all interfaces
-            dns = self.get_dns(dev)
+            dns = self.get_dns(interface)
             if global_dns or dns:
                 all_dns = global_dns
                 if dns:
@@ -404,8 +428,8 @@
 
     if ssh_key_var:
         lines = context.get(ssh_key_var).splitlines()
-        results['metadata']['public-keys'] = [l for l in lines
-            if len(l) and not l.startswith("#")]
+        ssh_keys = [l for l in lines if len(l) and not l.startswith("#")]
+        results['metadata']['public-keys'] = ssh_keys
 
     # custom hostname -- try hostname or leave cloud-init
     # itself create hostname from IP address later
@@ -453,3 +477,4 @@
 # Return a list of data sources that match this set of dependencies
 def get_datasource_list(depends):
     return sources.list_from_depends(depends, datasources)
+