参考资料：

http://blog.csdn.net/hxh1994/article/details/41823365

1、Windows是否安装了VirtualBox的网桥驱动？

http://www.360doc.com/content/13/1228/19/1313469_340824553.shtml

http://tieba.baidu.com/p/2058895544

http://wenku.baidu.com/link?url=yvG6rTTE9H0IB4IsfDfHM_kpyZ1t3L5KTnwlPSkRtE600Ll3J0dC_m0jICVh7M0lTgZ8MLW1R30YqzRc7gEWGZRB-BrdFFglvAKL6OrVm5K

2、双网卡暂时规避（不推荐）

http://moyu2010.blog.163.com/blog/static/17743904120112278221238/

http://blog.csdn.net/wangshfa/article/details/8765625

【VirtualBox】VirtualBox的桥接网络模式，为啥网络不稳定？