Doc: bgp: remove "advertise ipv4"

The option was removed in d15b0b0a ("BGP redesign", 2016-12-07)
but the documentation wasn't updated.

diff --git a/doc/bird.sgml b/doc/bird.sgml
index 39dadaf20eee3157e2c7fec8ebc180e8346fb7fb..4e4804deda93f3bcde7fb19943d5290ab030f1c0 100644 (file)
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -2607,13 +2607,6 @@ using the following configuration parameters:
        disabled. Default: on, with automatic fallback to off when received
        capability-related error.
 
-       <tag><label id="bgp-advertise-ipv4">advertise ipv4 <m/switch/</tag>
-       Advertise IPv4 multiprotocol capability. This is not a correct behavior
-       according to the strict interpretation of <rfc id="4760">, but it is
-       widespread and required by some BGP implementations (Cisco and Quagga).
-       This option is relevant to IPv4 mode with enabled capability
-       advertisement only. Default: on.
-
        <tag><label id="bgp-advertise-hostname">advertise hostname <m/switch/</tag>
        Advertise hostname capability along with the hostname. Default: off.