说明：
用公司淘汰下来的电脑安装rhel 5.4做测试机。 装完系统后，发现只能ping自己，网关不通，重启network服务正常，会提示bringing up interface eth0: r8169: eth0: unknown chipset (mac_version=1)
网上查了些资料，貌似centos5.4 自带的网卡驱动会有点问题，需要安装官方驱动，以下是解决问题方法：
# lspci |grep Ethernet //查看网卡型号，这是显示是realtek rtl8111/8168b 04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
实现：
1.上网搜realtek rtl8111/8168b这款的linux driver。
# cd /usr/local/src # tar jxvf r8168-8.037.00.tar.bz2 # cd r8168-8.037.00 # ./autorun.sh //直接autorun.sh安装，会提示以下信息 make: *** /lib/modules/2.6.18-194.el5/build: No such file or directory. Stop. make: *** [default] Error 2
这是因为缺少kernel-headers kernel-devel内核开发环境
2.加载rhel的源，rpm安装kernel-headers kernel-devel内核开发环境
# mkdir /mnt/cdrom //建立/mnt/cdrom目录用于挂载光驱 # mount /dev/cdrom /mnt/cdrom # cd /mnt/cdrom/Server # rpm -ivh kernel-headers**** # rpm -ivh kernel-devel**** # cd /usr/local/src/r8168-8.037.00 # ./autorun.sh
会提示什么gcc没有安装啥的，。。。。
3.安装gcc及相应依赖库
# cd /mnt/cdrom/Server # rpm -ivh gcc-*** //会提示依赖库，根据上面的提示rpm -ivh安装相应的库即可 # cd /usr/local/src/r8168-8.037.00 # ./autorun.sh //这时，再autorun.sh就没问题了。会出现些备份啥的 Check old driver and unload it. rmmod r8169 Build the module and install Backup r8169.ko rename r8169.ko to r8169.bak Depending module. Please wait. load module r8168 Completed.
4.修改modprobe.conf，加载新驱动！
# vim /etc/modprobe.conf //修改/etc/modprobe.conf，修改以下内容，eth0为网卡名称，r8168为新网卡驱动目录 alias eth0 r8168
5.重启network服务
# service network restart # ethtool -i eth0 driver: r8168 version: 8.037.00-NAPI firmware-version: bus-info: 0000:01:00.0
6.测试
# ping www.baidu.com PING www.a.shifen.com (115.239.210.26) 56(84) bytes of data. 64 bytes from 115.239.210.26: icmp_seq=1 ttl=55 time=24.7 ms 64 bytes from 115.239.210.26: icmp_seq=2 ttl=55 time=43.4 ms --- www.a.shifen.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1000ms rtt min/avg/max/mdev = 24.718/34.108/43.498/9.390 ms
这样，就都正常！！