补充 ip addr flush 命令等.

Signed-off-by: chen.yang <chen.yang@yuzhen-iot.com>

Software/Applications/IPRoute2/IPRoute2_说明.md

@@ -32,6 +32,13 @@ ip addr add <ip addr> dev <netif>
 ip addr del <ip addr> dev <netif>
 ```
 
+## 协议地址和路由
+
+```bash
+# 删除对应设备的 IPv4 和 IPv6 等全部协议地址及路由信息
+ip addr flush dev <netif>
+```
+
 ## 路由信息和设置
 
 ```bash
@@ -61,6 +68,14 @@ ip route del default via <gateway>
 ip route del default dev <netif>
 ip route del <ip addr>[/<netmask>] via <gateway>
 ip route del <ip addr>[/<netmask>] dev <netif>
+# 保存路由表到标准输出
+ip route save
+# 从标准输入恢复路由表
+ip route restore
+# 以特定规则清楚路由表
+ip route flush table main
+ip route flush table local
+ip route flush dev <netif>
 ```
 
 ## ARP

Software/System/Linux/Modules/Network/Linux_网络配置.md

@@ -185,6 +185,7 @@ ip addr add <ip addr> dev <bridge name>
 ip route replace default dev <bridge name>
 # To add an interface (e.g. eth0) into the bridge, its state must be up
 ip link set <netif> up
+ip addr flush dev <netif>
 ip link set <netif> master <bridge name>
 # Show the existing bridges and associated interfaces
 bridge -d link