diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h
index a4d82f8..b41050e 100644
--- a/include/linux/drbd_nl.h
+++ b/include/linux/drbd_nl.h
@@ -63,6 +63,7 @@
 	NL_BIT(		41,	T_MAY_IGNORE,	always_asbp)
 	NL_BIT(		61,	T_MAY_IGNORE,	no_cork)
 	NL_BIT(		62,	T_MANDATORY,	auto_sndbuf_size)
+	NL_BIT(		70,	T_MANDATORY,	dry_run)
 )
 
 NL_PACKET(disconnect, 6, )