From 44eaf79647a8c457cd9ca5b7417fb5c014cda28d Mon Sep 17 00:00:00 2001
From: Shih-Hao Li <shihli@vmware.com>
Date: Thu, 22 Sep 2016 11:43:21 -0700
Subject: [PATCH] NSXv3: Fix problem when reset lport attachment

When the attachment is reset on a neutron port
(for example, a VM is deleted on a pre-created neutron port),
the attachment type/id will be reset on the corresponding
logical port. But currently the plugin doesn't do it
because it skips passing the attachment attribute if it is None.

Change-Id: Iacccf6dce1780c0cb6bc8332e065482d699e5cb9
---
 vmware_nsx/nsxlib/v3/resources.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/vmware_nsx/nsxlib/v3/resources.py b/vmware_nsx/nsxlib/v3/resources.py
index ace377e32f..a19b569633 100644
--- a/vmware_nsx/nsxlib/v3/resources.py
+++ b/vmware_nsx/nsxlib/v3/resources.py
@@ -240,8 +240,8 @@ class LogicalPort(AbstractRESTResource):
                 })
             body['switching_profile_ids'] = profiles
 
-        if attachment:
-            body['attachment'] = attachment
+        # Note that attachment could be None, meaning reset it.
+        body['attachment'] = attachment
 
         return body