doc: Document RFC8212 under `Displaying BGP Information` section

Looks like people don't find what does it mean (Policy) at first shot, let's
try giving more hints here.

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>

diff --git a/doc/user/bgp.rst b/doc/user/bgp.rst
index f045ca239eef6901b16f199cdcd719eb585da7d1..52bfa5b295ae23d87ff6a722ed412602509b5af4 100644 (file)
--- a/doc/user/bgp.rst
+++ b/doc/user/bgp.rst
@@ -455,7 +455,7 @@ Administrative Distance Metrics
 .. _bgp-requires-policy:
 
 Require policy on EBGP
--------------------------------
+----------------------
 
 .. clicmd:: bgp ebgp-requires-policy
 
@@ -3882,6 +3882,12 @@ structure is extended with :clicmd:`show bgp [afi] [safi]`.
       Total number of neighbors 1
       exit1#
 
+If PfxRcd and/or PfxSnt is shown as ``(Policy)``, that means that the EBGP
+default policy is turned on, but you don't have any filters applied for
+incoming/outgoing directions.
+
+.. seealso:: :ref:`bgp-requires-policy`
+
 .. clicmd:: show bgp [afi] [safi] [all] [wide|json]
 
 .. clicmd:: show bgp vrfs [<VRFNAME$vrf_name>] [json]