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-rw-r--r--doc/bird.sgml11
1 files changed, 6 insertions, 5 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 33f6418f..401b4035 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -783,11 +783,12 @@ agreement").
<descrip>
<tag><label id="proto-pass-id">id <M>num</M></tag>
- ID of the password, (1-255). If it is not used, BIRD will choose ID based
- on an order of the password item in the interface. For example, second
- password item in one interface will have default ID 2. ID is used by
- some routing protocols to identify which password was used to
- authenticate protocol packets.
+ ID of the password, (0-255). If it is not specified, BIRD will choose ID
+ based on an order of the password item in the interface, starting from
+ 1. For example, second password item in one interface will have default
+ ID 2. ID 0 is allowed by BIRD, but some other implementations may not
+ allow it. ID is used by some routing protocols to identify which
+ password was used to authenticate protocol packets.
<tag><label id="proto-pass-gen-from">generate from "<m/time/"</tag>
The start time of the usage of the password for packet signing.