[PATCH 4/4] Controller: fix loopback address conflict with other soft device addresses

[Jan Tluka]

This patch fixes bug when more devices with mac address
00:00:00:00:00:00 is present when recipe starts (this might happen if a
user works with tunneling devices that usually have this mac address).
As result map_if_by_hwaddr returns more than one device and device
cannot be mapped. The solution is to map loopback interface based on
mac address and driver.

Fixes issue #133.

Signed-off-by: Jan Tluka <jtluka(a)redhat.com&gt;
---
 lnst/Controller/Machine.py | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/lnst/Controller/Machine.py b/lnst/Controller/Machine.py
index c360e6c..7456fdf 100644
--- a/lnst/Controller/Machine.py
+++ b/lnst/Controller/Machine.py
@@ -792,12 +792,16 @@ class LoopbackInterface(Interface):
 
     def configure(self):
         self._hwaddr = '00:00:00:00:00:00'
+        self._driver = 'loopback'
+
         if self._netns:
             phys_devs = self._machine._rpc_call_to_netns(self._netns,
-                                    "map_if_by_hwaddr", self._id,
self._hwaddr)
+                                    "map_if_by_params", self._id,
+                                    { 'driver': self._driver })
         else:
-            phys_devs = self._machine._rpc_call("map_if_by_hwaddr",
-                                                self._id, self._hwaddr)
+            phys_devs = self._machine._rpc_call("map_if_by_params",
+                                                self._id,
+                                                { 'driver': self._driver })
 
         if len(phys_devs) == 1:
             self.set_devname(phys_devs[0]["name"])
-- 
2.1.0