Changes between Initial Version and Version 10 of Ticket #13899

Ticket #13899 – Description

initial	v10
9	9	when testing,only this guest OS is runing!
10	10	my email is :qidizi&qq.com
11		If you are using a NAT(not NAT network), this problem will become more serious, see the following ~~link:~~https://www.centos.org/forums/viewtopic.php?f=50&t=51112
	11	If you are using a NAT(not NAT network), this problem will become more serious, see the following https://www.centos.org/forums/viewtopic.php?f=50&t=51112
12	12	If you use the "bridging model", this problem would not have arisen;
13	13	Possible causes:postfix(http://www.postfix.org,Install on CentOS systems) is runing,and A large number of mail is being delivered;and the browser on the host(window on "k27"), constantly refresh a PHP page,the "nginx/php" on Centos;then "VboxNetNat.exe" Random crashes,But I cannot determine what operation caused crash;