openwrt bb版ip rule add 执行不成功，求助！！！

zhao-usr

在执行/etc/init.d/multiwan start

发现里面
        ip rule add from $ipaddr table $(($1 + 170)) prio $(($1 * 10))
        ip rule add fwmark 0x$(($1 * 10)) table $(($1 + 170)) prio $(($1 * 10 + 1))
都会报下面的错误呢
RTNETLINK answers: Address family not supported by protocol