doc: add bpgd --listenon implies --no_kernel

The bgpd --listenon option implies --no_kernel. This commit makes note
of that in the documentation.

Signed-off-by: Mathias Bøhn Grytemark <mathias@grytemark.no>

diff --git a/doc/user/bgp.rst b/doc/user/bgp.rst
index 486ae5fad65a247af024baa09c79c7d3a11975e6..a00b994988cc880ff82e97cf964b6f3bab8a5c99 100644 (file)
--- a/doc/user/bgp.rst
+++ b/doc/user/bgp.rst
@@ -35,6 +35,8 @@ be specified (:ref:`common-invocation-options`).
    of ``0.0.0.0`` / ``::``. This can be useful to constrain bgpd to an internal
    address, or to run multiple bgpd processes on one host.
 
+   Note that this option implies the --no_kernel option, and no learned routes will be installed into the linux kernel.
+
 .. option:: -n, --no_kernel
 
    Do not install learned routes into the linux kernel.  This option is useful