VM5.5下安装redhat9之后，上不了网，检查系统配置里面的网络配置，系统好像没有发现网卡，只有一个eth0，描述显示是：vmnics，显然是虚拟的vm网卡

/etc/sysconfig/network-scripts/ifcfg-eth0文件内容如下：
DEVICE=eth0 
BOOTPROTO=dhcp 
ONBOOT=yes
USERCTL=no 
PEERDNS=yes 
TYPE=Ethernet


全部内容就这些，各位帮我看看问题出在哪，多谢了！ 

你的网卡设置成了 dhcp 模式，
直接设置 ip 地址试试。

ifconfig eth0 192.168.168.1.111

lz，深刻理解一下命令

[root@RHEL4_U5 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
IPADDR=192.168.1.220
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
#NETWORK=127.0.0.0
#BROADCAST=127.255.255.255
ONBOOT=yes
#NAME=loopback

[root@RHEL4_U5 ~]# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
search domain
nameserver 202.96.128.86
nameserver 61.144.56.100
nameserver 202.96.128.166

[root@RHEL4_U5 ~]# lspci|grep Ethernet
00:11.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] (rev 10)

[root@RHEL4_U5 ~]# lsmod
Module                  Size  Used by
md5                     8129  1
ipv6                  243425  14
autofs4                25285  0
i2c_dev                14529  0
i2c_core               26049  1 i2c_dev
sunrpc                143909  1
dm_mirror              31429  0
dm_mod                 65001  1 dm_mirror
button                 10705  0
battery                12997  0
ac                      8901  0
uhci_hcd               33241  0
pcnet32                31049  0
mii                     9281  1 pcnet32
floppy                 58193  0
ext3                  119753  3
jbd                    59993  1 ext3
ata_piix               19141  0
libata                106141  1 ata_piix
mptscsih                5569  0
mptsas                 18509  1 mptscsih
mptspi                 13649  5 mptscsih
mptscsi                41501  2 mptsas,mptspi
mptbase                63393  3 mptsas,mptspi,mptscsi
sd_mod                 20801  6
scsi_mod              120397  5 libata,mptsas,mptspi,mptscsi,sd_mod