什么是IPv4地址？
How long can I keep my company on IPv4?
公司使用的IPv 4可以保持多久？
What happens when IPv4 addresses run out?
IPv4地址耗尽会发生什么？
There are still some IPv4 addresses available.
目前还有一些IPv4地址可供使用。
The world has about 4.3 billion IPv4 addresses.
全球有约43亿个IPv4地址。
The IPV4 can only provide 4 billion IP addresses.
IPV 4只能提供40亿个IP地址。
IPv6 itself USES a different notation to IPv4 addresses.
IPv 6本身使用了不同于IPv4地址的点符号。
IPv4 addresses are a finite and nearly depleted resource.
IPv4地址是几乎耗尽的有限资源。
More than 90% of IPv4 addresses have already been assigned.
超过90%的IPv4地址已经被分配完了。
IPv4 was designed to handle just over four billion IP addresses.
IPv 4只能处理40亿个地址。
Unfortunately, the IPv4 address space is running out, and quickly.
然而遗憾的是，IPv4地址空间很快就要耗尽了。
However, there may be services which are only available over IPv4.
不过有些服务可能仅在IPv 4下可用。
Mixed IPv4 and IPv6 communications are supported in a dual mode cell.
双模式单元中支持混合的IPv4和IPv 6通信。
IPSec is an integral part of IPv6 while IPv4 support for IPSec is optional.
IPSec是IPv 6不可或缺的部分，而对IPSec的IPv 4支持是可选的。
IPsec is an optional security component of IPv4, but in IPv6 it is mandatory.
IPSec是IPv4的一个可选的安全组成部分，但在IPv 6是强制性的。
Given IPv4's dwindling address pool, that obviously wouldn't be a good thing.
由于IPv4的地址池日渐枯竭，这显然不是什么好事情。
IPv4 uses 32-bit addresses and can support approximately 4.3 billion devices.
IPv4协议用的是32位编码的地址，可以支持大约43亿个装置或设备（的地址）。
Like IPv4, it is subject to attacks when vulnerabilities are successfully exploited.
与IPv 4类似，在漏洞被成功利用时，会受到攻击。
The current addressing system—called IPv4—has about four billion possible addresses.
现在的寻址系统称为IPv4，它拥有40亿个有效地址。
Additionally, it is designed to rectify issues found with IPv4 such as data security.
此外它还改进了IPv 4使用上的一些问题，比如数据安全。
Ideally, the browser will simply switch over to the IPv4 protocol and make a connection.
理想情况下，浏览器将仅会切换回IPv 4协议并建立连接。
The futuristic applications are now enabled for dual stack support for both IPv4 and IPv6.
现在，未来的应用程序可以支持IPv4和IPv6双协议栈。
IPSec for IPv6 provides the same level of authentication and security as it does for IPv4.
ipsec为ipv 6提供了与IPv4的相同级别的认证和安全。
In any case, IPv4 and IPv6 are expected to coexist on the Internet for many years to come.
不管怎样，预计IPv4和IPv 6会在今后许多年内共存。
The net effect of all this is that there's less than 4 billion IPv4 addresses to go around.
所有这一切导致的后果就是可分配的IPv4地址不足40亿。
Most of the Internet in Europe is based on IP addresses standardised in 1996, known as IPv4.
大部分的互联网在欧洲是基于1996年IP地址标准化，被称为IPv4。
The IPv4 and IPv6 protocols refer to the way in which web addresses are created and assigned.
IPv4和IPv6都是有关互联网地址产生和分配的协议。
With growing demand on Internet access, the IPV4 exhaustion is already on the horizon in the world.
随着网络需求的增长，世界IPV4枯竭即将来临。
IPv4 will continue to be supported on all platforms in DB2 9 and will remain as the default protocol.
所有平台上的DB 2Viper中仍将继续支持IPv4，并以它作为缺省协议。
Due to IPv4's limited number of useable global addresses, IPv6 is expected to gradually replace IPv4.
由于IPv4在可用全局地址数量上的限制，IPv6有望逐渐取代IPv4。
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