busybox filesystem udhcpc 原理

时间：2022-05-31 06:04:00
/********************************************************************

 *               busybox filesystem udhcpc 原理

 * 声明：

 *     本文主要是记录busybox中的如何运用udhcpc获取IP，参考文章里写的

 * 很详细，不再累赘。

 *

 *                                 2016-1-23 深圳 南山平山村 曾剑锋

 *******************************************************************/

一、参考文章：

    BusyBox 應用 – udhcpc

        http://felix-lin.com/linux/busybox-%E6%87%89%E7%94%A8-udhcpc/

二、应用：

    . 拷贝udhcpc脚本：

        cp busybox-1.24./examples/udhcp/simple.script <filesystem root>/usr/share/udhcpc/default.script

    . 运行：

        udhcpc -b -S -p /var/run/udhcpc.pid

三、效果如下：

    udevd version  started

    zengjf login: root

    login[]: root login on 'ttymxc0'

    udhcpc (v1.24.1) started

    Setting IP address 0.0.0.0 on eth0

    eth0: Freescale FEC PHY driver [Generic PHY] (mii_bus:phy_addr=:, irq=-)

    Sending discover...

    Unable to load library icui18n "Cannot load library icui18n: (icui18n: cannot open shared object file: No such file or directory)"

    zengjf check QWSDisplay::requestRegion directServerConnection position.

    PHY: : - Link is Up - /Full

    Sending discover...

    Sending select for 10.0.1.52...

    Lease of 10.0.1.52 obtained, lease time

    Setting IP address 10.0.1.52 on eth0

    Deleting routers

    route: SIOCDELRT: No such process

    Adding router 10.0.1.254

    Recreating /etc/resolv.conf

     Adding DNS server 8.8.8.8

     Adding DNS server 202.96.128.166

    [zengjf@root ~]#

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