document INCEPTION-EPOCH exception

(cherry picked from commit 98d7e4c8416732e72be3cec1bf529ca42d99dd1a)

diff --git a/docs/dnsupdate.rst b/docs/dnsupdate.rst
index 301358fe20b7999b5da4a9eeb007e7c76eaa642d..c0b801c08c4dd24db5d995f22676291c09ed9317 100644 (file)
--- a/docs/dnsupdate.rst
+++ b/docs/dnsupdate.rst
@@ -237,6 +237,8 @@ These are the settings available for **SOA-EDIT-DNSUPDATE**.
 -  SOA-EDIT-INCREASE: Change the serial to whatever SOA-EDIT would
    provide. If what SOA-EDIT provides is lower than the current serial,
    increase the current serial by 1.
+   Exception: with SOA-EDIT=INCEPTION-EPOCH, the serial is bumped to at
+   least the current EPOCH time.
 
 DNS update How-to: Setup dyndns/rfc2136 with dhcpd
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