装了5.10后,用上网客户端认证成功了，却不能打开网页.

[xven]

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# This is a list of hotpluggable network interfaces.
interfaces文件:
# They will be activated automatically by the hotplug subsystem.
mapping hotplug
script grep
map eth0
# The primary network interface
iface eth0 inet static
address 222.22.7.110
netmask 255.255.255.128
network 222.22.7.0
broadcast 222.22.7.127
gateway 222.22.7.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 202.196.64.1
auto eth0

resolv.conf文件:
nameserver 202.196.64.1

以前也装过别的debian,网络设置也和这个一样,这次怎么了?
哪位大侠帮我看看,谢谢.