docs: add note about when lxc: XML namespace was added

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

diff --git a/docs/drvlxc.html.in b/docs/drvlxc.html.in
index 3dc9d5944863fd64c8783c15b2e420dde0588a4d..4f86535ab3b394f8688d8b0f9fdd59e4987c7c4a 100644 (file)
--- a/docs/drvlxc.html.in
+++ b/docs/drvlxc.html.in
@@ -611,6 +611,10 @@ ignored.
 </domain>
 </pre>
 
+<p>
+The use of namespace passthrough requires libvirt >= 1.2.19
+</p>
+
 <h2><a name="usage">Container usage / management</a></h2>
 
 <p>