PF_RT_FLAGSET
snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
{ .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
nlattr_add_u8(nw, PF_RT_FLAGSET, rule->flagset);
{ .type = PF_RT_FLAGSET, .off = _OUT(flagset), .cb = nlattr_get_uint8 },