ipv6

Link-scope IPv6 Multicast packets suddenly not routable on a MacBook Pro?

由 烈酒焚心 提交于 2019-12-21 19:05:42
问题 This is a slightly obscure question, but I'm stumped and I thought maybe somebody out there might have more of a clue on the issue. My co-worker has been successfully running an in-house application that uses IPv6 multicasting on his MacBook Pro for several months, but today the Mac decided to stop routing the multicast packets. In particular, the program prints this error: SendDataUDP(ff02::bead:cede:deed:feed@4) failed on Network interface [Name=[en0] Description=[] IP=[fe80::222:41ff:fe21

Java Library for converting a long IPv6 address into its compressed form

由 折月煮酒 提交于 2019-12-21 13:49:20
问题 I would like to know, whether there is a library which I can use to convert a represenation of a long IPv6 address (such as 2002:9876:57AB:0000:0000:0000:0000:0001) into the compressed IPv6 form (in this case: 2002:9876:57AB::1). I was not able to find such a library. This library should not use any IP Api, a network connection must not be made. I already tried return Inet6Address.getByName(longAdress).toString(); but this just replaces the 4 zeros with 1 zero (in this case 2002:9876:57AB:0:0

How to test iOS app is it supporting IPv6? [closed]

由 China☆狼群 提交于 2019-12-21 07:22:17
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago . I have apps, built 2015 and 2014. How can I test them for IPv6? If my apps doesn't support IPv6, what should I do? My apps are using AFNetworking and Alamofire. I'm connecting mostly to domains ( Ex. api.example.com/v1/...). Only 1 app use IP: (ex: 12.12.12.12:3000/api/v1/...). Is there problem for

Can't reproduce (IPv6?) connection issue that App Store review team is having

由 假如想象 提交于 2019-12-21 06:58:24
问题 I am experiencing an IPv6 problems with my iOS apps. Initially I submitted a few days before June 1st not knowing about IPv6 requirement (https://developer.apple.com/news/?id=05042016a). They were reviewed on June 1st and rejected for IPv6 incompatibility/not being able to connect. I didn’t want to set up my own IPv6 network, so I updated the code to be compliant - I updated Reachability provided by Apple to the newest version. I am also using my own downloading library written by a former

Establishing an IPv6 connection using sockets in python

由 自作多情 提交于 2019-12-21 04:26:26
问题 I am trying to run this very basic socket example: import socket host = 'ipv6hostnamegoeshere' port=9091 ourSocket = socket.socket(socket.AF_INET6, socket.SOCK_STREAM, 0) ourSocket.connect((host, port)) Yet, I get the error: ourSocket.connect((host, port)) File "<string>", line 1, in connect socket.error: [Errno 22] Invalid argument The boolean has_ipv6 returns true. Any help? 回答1: As the socket.connect docs says, AF_INET6 expects a 4-tuple: sockaddr is a tuple describing a socket address,

REDIRECT a port in ip6tables

由 给你一囗甜甜゛ 提交于 2019-12-21 03:42:12
问题 How can I redirect one port to another local port by using ip6tables ? e.g. something like this : ip6tables -t nat -A PREROUTING -j REDIRECT -p tcp --dport 443 --to-ports 8443 回答1: ip6tables does not support REDIRECT . (Normally people use this in a NAT environment, and NAT is generally not supported with IPv6.) If all you need to do is bind to the low port as a normal user, why not try the workaround described in this answer? Of course, in the case of Tomcat, it sounds like this would mean

IPv6 Socket on Android

由 北战南征 提交于 2019-12-20 20:31:24
问题 I am trying to create an IPv6 TCP connection between two Android devices. However creating the socket always fails. If I instantiate it like this: Inet6Address dest = (Inet6Address) InetAddress.getByName(addressString); Socket socket = new Socket(dest, portNumber); I get the following exception: java.net.ConnectException: failed to connect to *address* (port *portNumber*): connect failed: EINVAL (Invalid argument) If I instead instantiate my IPv6Address object like this: Enumeration

IPv6 Socket on Android

由 主宰稳场 提交于 2019-12-20 20:31:12
问题 I am trying to create an IPv6 TCP connection between two Android devices. However creating the socket always fails. If I instantiate it like this: Inet6Address dest = (Inet6Address) InetAddress.getByName(addressString); Socket socket = new Socket(dest, portNumber); I get the following exception: java.net.ConnectException: failed to connect to *address* (port *portNumber*): connect failed: EINVAL (Invalid argument) If I instead instantiate my IPv6Address object like this: Enumeration

Definitive guide to understanding how to formulate an IPv6 address

由 你。 提交于 2019-12-20 20:03:15
问题 For fun, I'd like to better understand the building blocks or elements that are within an IPv6 address. Here are the basics, from my understanding: IPv6 addresses are 128 bits long (written as 8 blocks, each with 16 bits) Each block is encoded as hex digits between 0 and 0xffff. Leading zeroes may be omitted. One can append an IPv4 doted-quad address, and it will occupy the lower 32 bits of the IPv6 address. 1:2:3:4:5:6:200.201.202.203. (The rules for the IPv4 are as expected.) The IPv4

IPv6基础协议介绍

由 余生长醉 提交于 2019-12-20 19:59:52
ICMPv6协议 ICMPv6的协议类型是58 除了IPv4中的作用外 还添加了邻居发现、无状态自动配置、PMTU 等作用 邻居发现协议NDP NDP 邻居发现协议 有如下功能 NDP使用ICMPv6的相关报文 RS(Router Solicitation)：路由器请求报文 RA(Router Advertisement):路由器通告报文 NS(Neighbor Solicitation):邻居请求报文 NA(Neighbor Advertisement):邻居通告报文 地址解析 PCl准备访问PC2之前，首先在本地邻居表中查找PC2的IPv6地址对应的以太网MAC地址，如果查找到相关表项，则将发往PC2的数据包封装在以太数据帧中然后发出:如果没有找到PC2的MAC地址，则发送NS消息用来请求其链路层地址 用ICMPv6里面的type 135(NS 邻居请求)和type 136(NA 邻居的通告)发送 过程如下： PCl向PC2的请求节点的组播地址发送NS消息，该消息是通过类型为135的ICMPv6报文来承载，目标地址是PC2的IPv6单播地址 PC2收到NS消息后，以单播的方式向PCl回应NA消息，该消息中包含了PC2的MAC地址。PC2还会将PCl的 IPv6地址和MAC地址添加至本地的邻居缓存表中 PCl收到来自PC2的NA消息后
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