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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 4024f137..5f478066 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1653,6 +1653,12 @@ are translated to appropriate system (and OS-specific) route attributes.
We support these attributes:
<descrip>
+ <tag>int <cf/krt_source/</tag> The source of the imported
+ kernel route. The value is system-dependent. On Linux, it is
+ a value of the protocol field of the route. See
+ /etc/iproute2/rt_protos for common values. On BSD, it is
+ based on STATIC and PROTOx flags. The attribute is read-only.
+
<tag>ip <cf/krt_prefsrc/</tag> (Linux) The preferred source address.
Used in source address selection for outgoing packets. Have to
be one of IP addresses of the router.