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-rw-r--r--doc/spec/dir-spec.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/spec/dir-spec.txt b/doc/spec/dir-spec.txt
index d2851f6036..71b588cffa 100644
--- a/doc/spec/dir-spec.txt
+++ b/doc/spec/dir-spec.txt
@@ -1181,6 +1181,7 @@ $Id$
higher numbers. Currently recognized methods:
"1" -- The first implemented version.
"2" -- Added support for the Unnamed flag.
+ "3" -- Added legacy ID key support to aid in authority ID key rollovers
Before generating a consensus, an authority must decide which consensus
method to use. To do this, it looks for the highest version number