/******************************************************************** *               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：    1. 拷贝udhcpc脚本：        cp busybox-1.24.1/examples/udhcp/simple.script 
     
      /usr/share/udhcpc/default.script    2. 运行：        udhcpc -b -S -p /var/run/udhcpc.pid三、效果如下：    udevd version 126 started    zengjf login: root    login[1423]: 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=1:01, irq=-1)    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: 1:01 - Link is Up - 100/Full    Sending discover...    Sending select for 10.0.1.52...    Lease of 10.0.1.52 obtained, lease time 7200    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 ~]#