ifconfig显示仅仅有一个lo网卡，网上找了一些文章。大多是改动/etc/network/interfaces
原来内容是
# #######################################################
# 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
# The primary network interface
auto eth0
iface eth0 inet dhcp
# #######################################################
将eth0改为静态ip
# #######################################################
# 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
# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.60.218
gateway 192.168.60.1
netmask 255.255.255.0
# #######################################################
reboot后运行ifconfig，仍然仅仅显示lo。找不到eth0
无意中运行ifconfig -a，显示有eth1,eth2和lo。
于是改动/etc/network/interfaces，将原来的eth0改动为eth1
# #######################################################
# 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
# The primary network interface
auto eth1
iface eth1 inet static
address 192.168.60.218
gateway 192.168.60.1
netmask 255.255.255.0
# #######################################################
reboot后，ifconfig最终显示eth1，熟悉的网络又回来了。这里简单记录一下，以免下次再次遇到。
