openwrt里nwan的指定出口无效，大家帮我看看是怎么回事？

yy915cn

系统日志一开始就有错误：
user.info sysinit: iptables v1.4.6: can't initialize iptables table `mangle': iptables who? (do you need to insmod?)
user.info sysinit: Perhaps iptables or your kernel needs to be upgraded.

规则如下：
user.info sysinit: line 11 dst=www.ip138.com
user.info sysinit: add iptables:iptables -t mangle -A ASSIGNOUT -p all -d www.ip138.com -j MARK --set-mark 1010
user.info sysinit: rule start...