ipv6 | 易学教程

Store IPv6 in database

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What's the best practise to store IP's with PHP in MySQL database? There's a function called ip2long - but this is just for IPv4. But what about IPv6? I know a php function that is for IPv6 IP's, but it doesn't work on Windows with PHP < Version 5.3 The dotted-decimal IPv4 address can be converted to an integer, with a maximum size of 32 bits. IPv6 addresses are 128 bits. Since 128 bits do not fit in a PHP int, this will be a pain to work with in PHP. If you just want to connect and use IPv6 addresses, save yourself the trouble and save them as text. If you want to apply netmasks and calculate

how to get IPV6 interface address using getifaddr() function [duplicate]

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问题 This question already has an answer here: How to know the IP address for interfaces in C using IPv6 1 answer I have getifaddrs() definition but it is for IPv4. Please guide me how to get IPv6 if address using the getifaddrs() function. 回答1: getifaddrs does support IPv6. Here's an example on how to print the name and IP address of all interfaces on the system: struct ifaddrs *ifa, *ifa_tmp; char addr[50]; if (getifaddrs(&ifa) == -1) { perror("getifaddrs failed"); exit(1); } ifa_tmp = ifa;

Linux ipv6 无状态设置为 EUI64

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Linux ipv6 无状态设置为 EUI64 转载注明来源: 本文链接来自 osnosn的博客，写于 2019-08-22. CentOS7 缺省无状态ipv6 为 EUI64 修改文件 /etc/sysconfig/network-scripts/ifcfg-xxx ， IPV6INIT=yes IPV6_AUTOCONF=yes - IPV6_ADDR_GEN_MODE=stable-privacy + IPV6_ADDR_GEN_MODE=eui64 或添加一行 IPV6_ADDR_GEN_MODE=eui64 armbian 缺省无状态ipv6 为 stable-privacy 修改 /etc/NetworkManager/system-connections/Armbian\ ethernet [ipv6] - addr-gen-mode=stable-privacy + addr-gen-mode=eui64 dns-search= 转载注明来源: 本文链接来自 osnosn的博客，写于 2019-08-22. 来源： https://www.cnblogs.com/osnosn/p/11396868.html

VMware中centos7访问外网配置

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1.配置虚拟机网络适配器，选择NAT模式 2.在编辑->虚拟机网络编辑器->更改设置选择目前使用的网卡 3.通过ifconfig查看网卡配置 4.编辑网络配置对应上面网卡名称ens33 5.添加网络配置 TYPE="Ethernet" PROXY_METHOD="none" BROWSER_ONLY="no" BOOTPROTO="none" DEFROUTE="yes" IPV4_FAILURE_FATAL="no" IPV6INIT="no" IPV6_AUTOCONF="no" IPV6_DEFROUTE="no" IPV6_FAILURE_FATAL="no" IPV6_ADDR_GEN_MODE="stable-privacy" NAME="ens33" UUID="46a67ab7-aac0-44c4-af20-d70b8a0d61e1" DEVICE="ens33" ONBOOT="yes" IPADDR=192.168.3.130 GATEWAY=192.168.3.2 NETMASK=255.255.255.0 DNS=192.168.3.2 　6.配置/etc/resolv.conf search localdomain nameserver 192.168.3.2 　7.重启网卡 service network restart 　8

How to multicast with ipv6 udp socket in C/C++ on linux?

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问题 (English is not my native tongue, don't worry if some sentences are strange ;) ). I was developing a PONG game and by the way creating some classes to help me managing window, event ... and network because I added a LAN feature to the game but currently you have to enter the address of the one with who you want to play with. And a solution to that was a broadcast (scanning LAN for player) . This was easy with ipv4, just use the address 255.255.255.255 but we are in 2017 and provide a feature

Connecting IPv4 client to IPv6 server: connection refused

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问题 I am experimenting with IPv6 sockets, particularly the "dual stack" capability offered on Windows Vista and later, and apparently on Unix by default. I am finding that when I bind my server to a specific IP address, or to the hostname resolution of my local machine, I cannot accept a connection from an IPv4 client. When I bind to INADDR_ANY however, I can. Please consider the following code for my server. You can see that I follow Microsoft's advice of creating an IPv6 socket, then setting

Checking for IP addresses

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问题 Are there any existing libraries to parse a string as an ipv4 or ipv6 address, or at least identify whether a string is an IP address (of either sort)? 回答1: Yes, there is ipaddr module, that can you help to check if a string is a IPv4/IPv6 address, and to detect its version. import ipaddr import sys try: ip = ipaddr.IPAddress(sys.argv[1]) print '%s is a correct IP%s address.' % (ip, ip.version) except ValueError: print 'address/netmask is invalid: %s' % sys.argv[1] except: print 'Usage : %s

PHP5 calculate IPv6 range from cidr prefix?

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I am able to do this with IPv4 using code snippets from various online sources. I was wondering if there was a way to do it with IPv6. Basically I just need a form that I can enter an IPv6 address and prefix (ex: address/68) and it calculates the network address, first useable address, last useable address, and broadcast address. Then just prints to screen. Not looking to store it in a database or anything yet. How would I go about doing this? Thanks to everyone in advance! First of all: IPv6 doesn't have network and broadcast addresses. You can use all addresses in a prefix. Second: On a LAN

Regular Expression (RegEx) for IPv6 Separate from IPv4

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Please read before marking as duplicate I have not been able to create or find a RegEx that works for all IPv6 formats (my test cases are below). I am aware of this question that everyone points to: Regular expression that matches valid IPv6 addresses However, They all combine IPv6 with IPv4 and/or do not work with all my test cases. Requirements: I do not want it to also validate IPv4 values, I already have a separate validation function for IPv4. I need a pattern that works in Coldfusion and a pattern that works in PL/SQL . Because I'm using it in PL/SQL the pattern for it must stay under

Is IP address on the same subnet as the local machine (with IPv6 support)

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问题 Does anyone have some code that will determine if an IP address (IPv4 or IPv6) is on the same subnet as the machine running the application? I've seen numerous examples of code that does this with IPv4 but I can't find any that support IPv6. EDIT: I'm unsure if I'm understanding all the differences between v4 and v6 so here's a bit more to my question. I have an application that serves both internet clients and intranet clients, that is to say there are clients that are on the same physical