BROPT_NF_CALL_IPTABLES
if (!brnet->call_iptables && !br_opt_get(br, BROPT_NF_CALL_IPTABLES))
br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
return sysfs_emit(buf, "%u\n", br_opt_get(br, BROPT_NF_CALL_IPTABLES));
br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);