doc: extend signing initiation occasions

diff --git a/doc/configuration.rst b/doc/configuration.rst
index d7d54579fb662ceb45449feb658103b9a8984b19..1971836ba32f053e1c3f50fa7547f2c168f2443d 100644 (file)
--- a/doc/configuration.rst
+++ b/doc/configuration.rst
@@ -572,6 +572,7 @@ The signing is initiated on the following occasions:
 - Zone reload
 - Reaching the signature refresh period
 - Key set changed due to rollover event
+- NSEC3 salt is changed
 - Received DDNS update
 - Forced zone re-sign via server control interface