doc: Say that maximum-prefix-out requires it's own update-group

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>

diff --git a/doc/user/bgp.rst b/doc/user/bgp.rst
index 63f3d05a939b94b014e67780d621aad57c2601ae..b1a7607d979ebbb1368e3e423a79c9d07aeecf75 100644 (file)
--- a/doc/user/bgp.rst
+++ b/doc/user/bgp.rst
@@ -1399,6 +1399,9 @@ Configuring Peers
 
    Sets a maximum number of prefixes we can send to a given peer.
 
+   Since sent prefix count is managed by update-groups, this option
+   creates a separate update-group for outgoing updates.
+
 .. index:: [no] neighbor PEER local-as AS-NUMBER [no-prepend] [replace-as]
 .. clicmd:: [no] neighbor PEER local-as AS-NUMBER [no-prepend] [replace-as]