防火牆重啓失敗 Failed to start IPv4 firewall with iptables.

轉載：https://blog.csdn.net/ls1645/article/details/78750561 防火牆重啓失敗。Failed to start IPv4 firewall with iptables. 用service iptables restart 開啓防火牆報錯: Failed to start  IPv4 firewall with iptables.     錯誤原因：

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