在这篇文章的指导下解决了，Opkg update失败的问题，问题出在开发板的网络DNS配置，开发板可以访问局域网的，但是不能访问互联网，另外angstrom linux 软件源 feeds 地址改变了 不在是原来的所有需要更改 /etc/opkg/*下的conf文件，前缀改成http://feeds.angstrom-distribution.org/feeds/，原来的地址是http://www.angstrom-distribution.org/feeds/，这个地址访问不通。这样就可以执行opkg update命令来安装软件了。
How-to update opkg package feeds
opkg is the default software package manager for Angstrom linux running on the Beagle Embedded starter kit hardware. It provides hundreds of open source software packages optimized specifically for the ARM platform architecture, similar to the heavy-weight apt-get package manager on desktop systems. The following describes how to update opkg feeds.
1. Make sure you have a live internet connection.
root@beagleboard:~# ping www.liquidware.com
If no internet is live, attach the ethernet cable (Beagle xM), or connect your ethernet adapter (Beagle C5), and execute the following commands:
root@beagleboard:~# ifdown usb0
root@beagleboard:~# ifup usb0
2. Look at what's inside your opkg config file:
root@beagleboard:~# cat /etc/opkg/beagleboard-feed.conf
3. Browse online for angstrom feeds to obtain a new URL here:
http://feeds.angstrom-distribution.org/feeds/
4. Edit each of your package feed configuration files located here using the URL from step 3:
root@beagleboard:~# ls -l /etc/opkg/*
-rw-r--r-- 1 www-data www-data 157 Mar 2 2011 /etc/opkg/arch.conf
-rw-r--r-- 1 www-data www-data 87 Mar 11 02:58 /etc/opkg/base-feed.conf
-rw-r--r-- 1 www-data www-data 109 Mar 11 02:57 /etc/opkg/beagleboard-feed.conf
-rw-r--r-- 1 www-data www-data 89 Mar 11 03:00 /etc/opkg/debug-feed.conf
-rw-r--r-- 1 www-data www-data 98 Mar 2 2011 /etc/opkg/gstreamer-feed.conf
-rw-r--r-- 1 www-data www-data 103 Mar 11 03:00 /etc/opkg/locale-en-feed.conf
-rw-r--r-- 1 www-data www-data 83 Mar 2 2011 /etc/opkg/noarch-feed.conf
-rw-r--r-- 1 www-data www-data 87 Mar 11 02:59 /etc/opkg/perl-feed.conf
-rw-r--r-- 1 www-data www-data 91 Mar 11 02:59 /etc/opkg/python-feed.conf
-rw-r--r-- 1 www-data www-data 80 Mar 2 2011 /etc/opkg/sdk-feed.conf
5. Execute commands:
$ opkg update
Then, you will be able to use the install command to install new software packages.
$ opkg install your-package
Additional documentation for opkg command:
http://wiki.openmoko.org/wiki/Opkg/Documentation#configuration_files
http://antipastohw.pbworks.com/w/page/53817795/How-to%20update%20opkg%20package%20feeds