OpenWRT 使用 watchdog 重啟網路

編寫：/root/wan-watchdog.sh

#!/bin/sh
tries=0
while [[ $tries -lt 5 ]]
do
        if /bin/ping -c 1 100.64.6.1 >/dev/null
        then
                exit 0
        fi
                tries=$((tries+1))
                /etc/init.d/network restart
                exit 0
done
exit 0

之後到 System → Scheduled Tasks 加入：

* * * * * /root/wan-watchdog.sh

參考資料：
OpenWrt WAN watchdog (2013)