add signing -serial to rndc usage

(cherry picked from commit 7bb9972a1f21c2375d7dafa71fbdf5dbebf8daeb)

diff --git a/bin/rndc/rndc.c b/bin/rndc/rndc.c
index d7e7496579f6217978aa16c3ec1ca127cf7b7715..9fce52850ec27803740d8b6af9c25b6275ee5cb6 100644 (file)
--- a/bin/rndc/rndc.c
+++ b/bin/rndc/rndc.c
@@ -176,6 +176,8 @@ command is one of the following:\n\
                Prime zone with NSEC3 chain if not yet signed.\n\
   signing -nsec3param none zone [class [view]]\n\
                Remove NSEC3 chains from zone.\n\
+  signing -serial <value> zone [class [view]]\n\
+               Set the zones's serial to <value>.\n\
   stats                Write server statistics to the statistics file.\n\
   status       Display status of the server.\n\
   stop         Save pending updates to master files and stop the server.\n\