auth: add b2b-migrate to pdnsutil man page

diff --git a/docs/manpages/pdnsutil.1.rst b/docs/manpages/pdnsutil.1.rst
index 81c6dffaad02c7dcbef4c736f341ec830bc4e7db..dea0107f8693d48ce33c0226d67a05bd0f97d7fb 100644 (file)
--- a/docs/manpages/pdnsutil.1.rst
+++ b/docs/manpages/pdnsutil.1.rst
@@ -272,6 +272,10 @@ bench-db [*FILE*]
 
 OTHER TOOLS
 -----------
+b2b-migrate *OLD* *NEW*
+    Migrate data from one backend to another.
+    Needs ``launch=OLD,NEW`` in the configuration.
+
 ipencrypt *IP-ADDRESS* password
     Encrypt an IP address according to the 'ipcipher' standard