On Mon, 7 Feb 2022 11:07:39 +0100 Hans Schultz <schultz.hans@xxxxxxxxx> wrote: > diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h > index 6218f93f5c1a..8fa2648fbc83 100644 > --- a/include/uapi/linux/if_link.h > +++ b/include/uapi/linux/if_link.h > @@ -532,6 +532,7 @@ enum { > IFLA_BRPORT_GROUP_FWD_MASK, > IFLA_BRPORT_NEIGH_SUPPRESS, > IFLA_BRPORT_ISOLATED, > + IFLA_BRPORT_LOCKED, > IFLA_BRPORT_BACKUP_PORT, > IFLA_BRPORT_MRP_RING_OPEN, > IFLA_BRPORT_MRP_IN_OPEN, NAK This is userspace API, adding a new value in enum in the middle will reorder the numbers and break ABI.