Merge pull request #323 from boretom/fix/ifquery-check-json

Fix error in ifquery -c -o json <tunnel interface>

Author: julienfortin

ifupdown2/ifupdown/iface.py

@@ -320,7 +320,7 @@ def default(self, o):
                         status_str = ifaceStatusUserStrs.UNKNOWN
                     vitem_status.append('%s' %status_str)
                     idx += 1
-                retconfig[k] = v[0] if len(v) == 1 else v
+                retconfig[k] = str(v[0] if len(v) == 1 else v)
                 retconfig_status[k] = vitem_status[0] if len(vitem_status) == 1 else vitem_status
 
         if (o.status == ifaceStatus.NOTFOUND or