在oracle的VM上安装Linux无法连接外网?

Oracle出品的VirtualBox确实是很强大, 以前在搭建虚拟机也是经常用它, 都没有遇到什么问题. 但今天很是奇怪呀. 在其上搭建一台Centos6.7的系统(最小化安装), 结果发现上不了网.

这里边我使用了双网卡, 一个使用NET方式连接外网, 一个使用Host-Only方式连接宿机(静态IP). 一切都设置好后, 发现与宿机连接没有问题, 一切正常. 只是这个外网无法访问. 下面网卡的状态信息:

eth0      Link encap:Ethernet  HWaddr 08:00:27:51:C6:A4  
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe51:c6a4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3010 (2.9 KiB)  TX bytes:4246 (4.1 KiB)

eth1      Link encap:Ethernet  HWaddr 08:00:27:F7:C6:04  
          inet addr:192.168.56.201  Bcast:192.168.56.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fef7:c604/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:243 errors:0 dropped:0 overruns:0 frame:0
          TX packets:170 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:27180 (26.5 KiB)  TX bytes:25904 (25.2 KiB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

下面分别是两个网卡的设置:

DEVICE=eth0
HWADDR=08:00:27:51:C6:A4
TYPE=Ethernet
UUID=3066ba4b-2f51-4158-9b92-694845752bca
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=dhcp

DEVICE=eth1
HWADDR=08:00:27:F7:C6:04
TYPE=Ethernet
UUID=56d03216-ea73-40c1-b872-fca1b667da11
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=192.168.56.201
NETMASK=255.255.255.0
GATEWAY=192.168.56.1

尝试过用dhclient命令, 但也没有效果, 难道是什么组件缺少安装了么? 记得以前安装CentOS6.5并没有遇到过这样的问题,求高手赐招!

补上宿机的网卡和虚拟机的网卡配置:

宿机: