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1 files changed, 12 insertions, 1 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 615ced98..4e04a138 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -337,7 +337,18 @@ protocol rip {
Besides, there are some predefined numeric constants based on /etc/iproute2/rt_* files.
A list of defined constants can be seen (together with other symbols) using 'show symbols' command.
- <tag>router id <m/IPv4 address/</tag> Set BIRD's router ID. It's a world-wide unique identification of your router, usually one of router's IPv4 addresses. Default: in IPv4 version, the lowest IP address of a non-loopback interface. In IPv6 version, this option is mandatory.
+ <tag>router id <m/IPv4 address/</tag>
+ Set BIRD's router ID. It's a world-wide unique identification
+ of your router, usually one of router's IPv4 addresses.
+ Default: in IPv4 version, the lowest IP address of a
+ non-loopback interface. In IPv6 version, this option is
+ mandatory.
+
+ <tag>router id from [-] [ "<m/mask/" ] [ <m/prefix/ ] [, ...]</tag>
+ Set BIRD's router ID based on an IP address of an interface
+ specified by an interface pattern. The option is applicable
+ for IPv4 version only. See <ref id="dsc-iface" name="interface">
+ section for detailed description of interface patterns.
<tag>listen bgp [address <m/address/] [port <m/port/] [dual]</tag>
This option allows to specify address and port where BGP