doc: Update bgp unnumbered documentation

Mention the limitations of this type of peering
in bgp.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

diff --git a/doc/user/bgp.rst b/doc/user/bgp.rst
index 11bd67674090424537e6dea89c92da5c1432426f..232abfd745c33f51a850fedff4f676a548aa86f5 100644 (file)
--- a/doc/user/bgp.rst
+++ b/doc/user/bgp.rst
@@ -1604,7 +1604,10 @@ Configuring Peers
 
    Configure an unnumbered BGP peer. ``PEER`` should be an interface name. The
    session will be established via IPv6 link locals. Use ``internal`` for iBGP
-   and ``external`` for eBGP sessions, or specify an ASN if you wish.
+   and ``external`` for eBGP sessions, or specify an ASN if you wish.  Finally
+   this connection type is meant for point to point connections.  If you are
+   on an ethernet segment and attempt to use this with more than one bgp
+   neighbor, only one neighbor will come up, due to how this feature works.
 
 .. clicmd:: neighbor PEER next-hop-self [force]