ipv6

这里主要介绍一下 IPV4 / IPV6 在 PHP / MySQL 中如何转换。以及中间容易碰到的一些问题。 首先介绍两个函数： ip2long ：将 IPV4 的字符串互联网协议转换成长整型数字 int ip2long ( string $ip_address ) long2ip ：将长整型转化为字符串形式带点的互联网标准格式地址（IPV4） string long2ip ( int $proper_address ) 问题一：MySQL 中如何存储IP地址。 IPV4 地址长度32位，有 2^32-1 个地址。 所以 MySQL 中如果使用 int 来存储，要加 unsigned 标识。 int 有符号的范围是 -2^31 (-2,147,483,648) 到 2^31 - 1 (2,147,483,647) ，无符号的范围是 0 到 2^32-1(4294967295) IPV6 地址长度128位。因此不能使用 int 存储，可以使用 varchar 类型存储。 问题二：ip2long 出现负数问题。 示例： $ip_long = ip2long('192.168.8.30'); $long_ip = long2ip($ip_long); echo $ip_long; // -1062729698 echo $long_ip; // 192.168.8.30

原始简书文章地址 (也是我自己的) 首先声明,一我不负责涉及你们内部服务器. 二是好好读文章,别人能过,你们也能过 苹果6月1日出的 IPV6 协议阻碍了国内大多数积极开发者,我司也不外乎,经过三次被拒后,遂在网上查找关于 IPV6 审核的相关事宜,怪我年少无知以为这种开源协议的东西应该是免费的,当然,我说的免费是想着看几篇成熟的 IPV6 审核文章然后自己实践,奈何几乎所有关于苹果 IPV6 审核的文章到最后不是推荐买教育网转发要不就是直接把钱交给个人然后让第三方来协助通过. 我实在无法想象一个仅仅靠着linux服务器外加nginx转发就能赚大钱的畸形小社会是怎样形成的,linux市值多少钱恐怕无人能说出. 所有文章内说的苹果 IPV6 和后台服务器没关系是错误的,至少在请求转发层面是错误的.苹果使用 IPV6-ONLY 网络进行APP测试,如果服务器端支持 IPV6 的话则可以直接请求 IPV6 所对应的服务器进而使用nginx转发至相应的API接口.如果没有 IPV6 地址的话则直接通过NAT64转化为相应的IPV4进行请求相应API. 请注意这里的重点是这个 IPV6 ,,服务器不能单单支持 IPV6 即可,所谓的支持不能仅仅是打开linux服务器内相应被封印的 IPV6 相关设置然后加一个 HE 隧道(当然这么着也有通过的,但是 HE 也是基于 IPV4

I'm currently trying to understand how IPv6 adresses work. There are link-local and site-local adresses used for small and organisational networks respectively. But if one of those clients also has internet access, it would need two IPs, correct? One link/site-local and one global adress. How is that managed by the interface and the routers? One interface would need two IPs, since there is no NAT in IPv6. In general, interfaces have one link-local scope unicast address and zero or more global scope unicast addresses. (They may be also members of some finite number of multicast groups.)

I'm working on an IP geolocation library that uses the first three octets of an IPv4 address to determine a user's country, city, lat, lon, etc. Works like a charm. But it doesn't handle IPv6 addresses, and I'd like it to do so. Is there any way to transform an IPv6 address to get the equivalent of the first three octets of an IPv4 address, or are they on an entirely different numbering scheme, requiring a completely different ipgeo mapping? The typical IPv6 allocation is a /32 (four octets) to an Internet provider (which can be a multinational company), then /48 (six octets) to an end site

Getting java.net.SocketException when trying to start a multicast provider: 2013-09-11 11:45:44,204 [main] ERROR net.sf.ehcache.distribution.MulticastRMICacheManagerPeerProvider: Error starting heartbeat. Error was: Can't assign requested address java.net.SocketException: Can't assign requested address at java.net.PlainDatagramSocketImpl.join(Native Method) at java.net.AbstractPlainDatagramSocketImpl.join(AbstractPlainDatagramSocketImpl.java:178) at java.net.MulticastSocket.joinGroup(MulticastSocket.java:319) at net.sf.ehcache.distribution.MulticastKeepaliveHeartbeatReceiver.init

I've donne a web app with Spring/GWT that uses Flash to upload files. When I send an ajax request with GWT and try to get the user ip address, I get an ipv4 address like: 127.0.0.1 but when I upload my files with flash (and so a post request on the same webapp) I get an ipv6 address 0:0:0:0:0:0:0:1 I use the same code to get the user ip which is: ServletRequestAttributes att = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes(); att.getRequest().getRemoteAddr(); The problem is that I use a signature which uses the ip address to be sure that user can upload files (due to

Over the years I've developed a small mass of C++ server/client applications for Windows using WinSock (Routers, Web/Mail/FTP Servers, etc... etc...). I’m starting to think more and more of creating an IPv6 version of these applications (While maintaining the original IPv4 version as well, of course). Questions: What pitfalls might I run into? Is the porting/conversion difficult? Is the conversion worth it? For a reference (or for fun), you can sneek a peak of the IPv4 code at the core of my applications. Einstein getaddrinfo and getnameinfo are your friends.. As much as possible I suggest

在APT中禁用IPv6 有时，您需要在APT包中禁用IPv6，只有在需要时，其他程序可以继续使用IPv6。 要在APT中禁用IPv6，请运行以下命令为APT创建一个配置文件。 sudo nano /etc/apt/apt.conf.d/99force-ipv4 将以下行复制并粘贴到文件中。 Acquire::ForceIPv4 "true"; 保存并关闭文件。 从现在起，APT将仅使用IPv4。 在Ubuntu上完全禁用IPv6 如果要在Ubuntu Linux系统上完全禁用IPv6，则需要对Linux内核参数进行一些更改。 编辑99-sysctl.conf文件。 sudo nano /etc/sysctl.d/99-sysctl.conf 复制并粘贴以下3行在文件的底部。 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 保存并关闭文件。 然后执行以下命令加载上述更改。 sudo sysctl -p 现在运行以下命令。 您应该看到1，这意味着IPv6已成功禁用。 cat /proc/sys/net/ipv6/conf/all/disable_ipv6 在重新启动后，99-sysctl.conf文件中定义的参数被保留