diff --git a/doc/user/source/known-issues.rst b/doc/user/source/known-issues.rst
index 4b1cbfc..85e76df 100644
--- a/doc/user/source/known-issues.rst
+++ b/doc/user/source/known-issues.rst
@@ -10,3 +10,10 @@ specified amount of backup nodes while Neutron server waits until this
 operation is finished. Default timeout for neutron-server start is about 7
 minutes. If you encounter such behaviour wait until all backup edge nodes are
 provisioned on vSphere side and rerun deployment process.
+
+Change of ``admin_state_up`` does not affect actual port state
+--------------------------------------------------------------
+
+NSX plugin does not change *admin_state_up* of a port. Even if operator
+executes ``neutron port-update`` command, port will remain in active state, but
+will be reported as ``admin_state_up: False`` by ``neutron port-show`` command.