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-rw-r--r--doc/bird.sgml6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index a63493da..0112622e 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -2412,6 +2412,12 @@ using the following configuration parameters:
same address family and using the same local port) should have set
<cf/strict bind/, or none of them. Default: disabled.
+ <tag><label id="bgp-free-bind">free bind <m/switch/</tag>
+ Use IP_FREEBIND socket option for the listening socket, which allows
+ binding to an IP address not (yet) assigned to an interface. Note that
+ all BGP instances that share a listening socket should have the same
+ value of the <cf/freebind/ option. Default: disabled.
+
<tag><label id="bgp-check-link">check link <M>switch</M></tag>
BGP could use hardware link state into consideration. If enabled,
BIRD tracks the link state of the associated interface and when link