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-rw-r--r--doc/bird.sgml9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index c4d2c49b..51a92ce9 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1716,6 +1716,15 @@ Common route attributes are:
are merged to one ECMP route during export to the Kernel protocol
(with active <ref id="krt-merge-paths" name="marge paths"> option).
+ <tag><label id="rta-gw-mpls"><m/int/ gw_mpls</tag>
+ Outgoing MPLS label attached to route (i.e., incoming MPLS label on the
+ next hop router for this label-switched path). Reading returns the label
+ value and setting it sets it to the start of the label stack. Setting
+ implicit-NULL label (3) disables the MPLS label stack. Only the first
+ next hop and only one label in the label stack supported right now. This
+ is experimental option, will be likely changed in the future to handle
+ full MPLS label stack.
+
<tag><label id="rta-igp-metric"><m/int/ igp_metric</tag>
The optional attribute that can be used to specify a distance to the
network for routes that do not have a native protocol metric attribute