Android recovery系统下实现DHCP连接Ethernet的方法

这段时间工作要求Android recovery系统下实现Android 自动获取IP地址，在网上一查知道用DHCP来实现，看了正常系统下的实现方式，想用同样的方式在recovery模式下实现，但是没有成功。不知为何，先记录下来，希望能尽快解决，

在init.rc里面会启动一个dhcpd_eth0
的守护进程。

在init.rc里面启动了

service dhcpcd_wlan0 /system/bin/dhcpcd -ABKL

class main

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service iprenew_wlan0 system/bin/dhcpcd -n

class main

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service dhcpcd_p2p /system/bin/dhcpcd -aABKL

class main

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service iprenew_p2p system/bin/dhcpcd -n

class main

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# bugreport is triggered by holding down volume down, volume up and power

service bugreport /system/bin/bugreport.sh

class main

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keycodes 114 115 116

service chrome /system/bin/chrome.sh

class main

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service dhcpcd_eth0 /system/bin/dhcpcd -ABKL

class main

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service iprenew_eth0 system/bin/dhcpcd -n

class main

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启动WiFi：

##wifi start

mkdir /system/etc/wifi 0770 wifi wifi

chmod 0770 /system/etc/wifi

#wpa_supplicant control socket for android wifi.c (android private socket)

mkdir /data/misc/wifi 0770 wifi wifi

mkdir /data/misc/wifi/sockets 0770 wifi wifi

chmod 0770 /data/misc/wifi

chown wifi wifi /data/misc/wifi

#add wpa_supplicant service

service wpa_supplicant /system/bin/wpa_supplicant -Dwext -iwlan0 -c /data/misc/wifi/wpa_supplicant.conf

class main

socket wpa_wlan0 dgram 0660 wifi wifi

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#add dhcpcd service

service dhcpcd_wlan0 /system/bin/dhcpcd -ABKL

class main

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#add dhcpcd-iprenew service

service iprenew_wlan0 /system/bin/dhcpcd -n

class main

disabled

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调试命令：

getprop net.dns1：无任何输出，DNS没法获取啊！

netcfg：查看网络状态，提示：soinfo_link_image(linker.cpp:1635): could not load library "libnetutils.so" needed by "netcfg"; caused by load_library(linker.cpp:745): library "libnetutils.so" not foundCANNOT LINK EXECUTABLE

ifconfig eth0：eth0: Cannot assign requested address，无法分配地址！，这是怎么回事？有人帮忙解决一下吗？