vps更换服务器后网卡不通的处理办法：

更换网卡vps主机不通，在更换服务器的时候linux的主机时常遇到这类问题。

具体处理办法是：

1.查看目前使用网卡和配置的实际mac地址（下面的使用的eth1）

[root@localhost ~]# vi /etc/udev/rules.d/70-persistent-net.rules 

显示信息如下：（可能会多出一段是eth_sudu的）

# This file was automatically generated by the /lib/udev/write_net_rules

# program, run by the persistent-net-generator.rules rules file.

#

# You can modify it, as long as you keep each rule on a single

# line, and change only the value of the NAME= key.

# net device ()

# net device ()

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:*", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# net device ()

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:4a:ff:2a:23:3d", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

~