IFLA_INFO_KIND
nlattr_add_string(nw, IFLA_INFO_KIND, ifp->if_dname);
nlattr_add_string(nw, IFLA_INFO_KIND, "gre");
nlattr_add_string(nw, IFLA_INFO_KIND, "vlan");
{ .type = IFLA_INFO_KIND, .off = _OUT(ifla_cloner), .cb = nlattr_get_stringn },
snl_add_msg_attr_string(&nw, IFLA_INFO_KIND, "gre");
snl_add_msg_attr_string(&nw, IFLA_INFO_KIND, "gre");
{ .type = IFLA_INFO_KIND, .off = _OUT(kind), .cb = snl_attr_get_string },