平台介绍：

开发板内核—linux-2.6.30

Busybox版本—1.6.0

移植过程：

内核移植：make menuconfig

选择上Networking --->
Networking support
Networking options --->

<*> Packet socket

[*] Packet socket: mmapped IO

[*] IP: DHCP support

[*] IP: BOOTP support

[*] IP: RARP support

[ * ] Network packet filtering (replaces ipchains) ---> //添加，后面子选项可不选，配置CONFIG_NETFILTER

说明：若没选 Packet socket, [ * ] Network packet filtering (replaces ipchains) --->选项，在执行udhcpc命令时出现如下错误：

Networking Utilities --->
udhcp Server/Client --->

[*] udhcp Server (udhcpd)

[*] dhcprelay

[*] Lease display utility (dumpleases)

[*] udhcp Client (udhcpc)

[*] Log udhcp messages to syslog

重新编译内核和busybox，得到udhcpc和udhcpd命令。