ipv6

Here is a related question but I could not figure out how to apply the answer to mechanize/urllib2: how to force python httplib library to use only A requests Basically, given this simple code: #!/usr/bin/python import urllib2 print urllib2.urlopen('http://python.org/').read(100) This results in wireshark saying the following: 0.000000 10.102.0.79 -> 8.8.8.8 DNS Standard query A python.org 0.000023 10.102.0.79 -> 8.8.8.8 DNS Standard query AAAA python.org 0.005369 8.8.8.8 -> 10.102.0.79 DNS Standard query response A 82.94.164.162 5.004494 10.102.0.79 -> 8.8.8.8 DNS Standard query A python.org

1、自动获取IPV6地址 1）修改/etc/sysconfig/network文件，修改如下字段，不存在则手动添加，部分系统默认是开启的 NETWORKING_IPV6=yes 2）修改/etc/sysconfig/network-script/ifcfg-ethX文件，修改如下字段 IPV6INIT=yes （是否开机启用IPV6地址） 3）运行命令service network restart 用命令ifconfig -a 查看IPV6地址信息，系统会自动分配一个“fe80:”开头的本地链路地址。 2、静态IPV6地址设置， 1）修改/etc/sysconfig/network文件，修改如下字段，不存在请手动添加，部分系统默认是开启的 NETWORKING_IPV6=yes 2）修改/etc/sysconfig/network-script/ifcfg-ethX文件，修改如下字段，没有的手动添加 IPV6INIT=yes （是否开机启用IPV6地址） IPV6_AUTOCONF=no （是否使用IPV6地址的自动配置） IPV6ADDR=2001:250:250:250:250:250:250:222/64 （ IPV6地址） IPV6_DEFAULTGW=2001:250:250:250::1（IPV6地址网关） 3）然后运行命令service network restart

Conventional IPv4 dotted quad notation separates the address from the port with a colon, as in this example of a webserver on the loopback interface: 127.0.0.1:80 but with IPv6 notation the address itself can contain colons. For example, this is the short form of the loopback address: ::1 How are ports (or their functional equivalent) expressed in a textual representation of an IPv6 address/port endpoint? Nico They work almost the same as today. However, be sure you include [] around your IP. For example : http://[1fff:0:a88:85a3::ac1f]:8001/index.html Wikipedia has a pretty good article about

I have been working on a facebook application which uses facebook graph API for authentication, recently facebook upgraded to IPv6 and my network does'nt support IPv6 so all of my calls started returning Host is unreachable error, I searched on facebook bugs and found that we can still use force the requests to facebook to use IPv4 using CURL CURLOPT_IPRESOLVE. Now when I try to send request to Facebook Graph API using curl I get Notice: Use of undefined constant CURLOPT_IPRESOLVE - assumed 'CURLOPT_IPRESOLVE' I want to know how can I enable support for this constant or how can I disable IPv6

Put another way, if an address is IPv4, why bother to express it as IPv6 at all? It’s IPv4 expressed through IPv6 so that the application only needs to support one IP stack. Being able to reference IPv4 addresses through IPv6 notation means I can work on getting IPv6 support really solid in my application, and not have to worry about duplicating effort. These days some distributions disable IPv4 compatibility by default (e.g. Debian), and also Windows does this by default. To accommodate this as a programmer you should bind two sockets: one IPv4 socket, and one IPv6 socket with the IPV6_V6ONLY

I was working on a project where I needed to expand IPv6 addresses. There are not many functions out there created by other users, and the ones that exist are ugly. Some of them included multiple foreach 's and gmp_init , which added a lot of overhead and harder to maintain code. I need a simple, non-taxing script to expand IPv6. Posting this for the community. The following is a two liner, where $ip is a condensed IPv6 address. Returns expanded $ip . Example : $ip = "fe80:01::af0"; echo expand($ip); // fe80:0001:0000:0000:0000:0000:0000:0af0 Function : function expand($ip){ $hex = unpack("H