diff --git a/sys/include/net/netopt.h b/sys/include/net/netopt.h
index 09531f1f5a..3fb472d1de 100644
--- a/sys/include/net/netopt.h
+++ b/sys/include/net/netopt.h
@@ -110,6 +110,8 @@ typedef enum {
      *
      * @deprecated  Do not implement this in a network device. Other APIs
      *              utilizing [netopt](@ref net_netopt) may still implement it.
+     *              Existing support of drivers will be dropped after the
+     *              2019.07 release.
      *
      * The generation of the interface identifier is dependent on the link-layer.
      * Please refer to the appropriate IPv6 over `<link>` specification for