ipv6

Best way to check if IPv6 is available

由 匆匆过客 提交于 2020-01-06 05:08:45
问题 What is the best way to check if IPv6 is available on the currient android phone? My currient idea is to use NetworkInterface and to enumerate via NetworkInterface.getNetworkInterfaces() but this seems to be too complicated. Is there a simpler way? 回答1: I don't know of a simpler way than using NetworkInterface if you need to check all of the interfaces, but it shouldn't be that bad: for(NetworkInterface netInt: NetworkInterface.getNetworkInterfaces()){ for(InterfaceAddress address: netInt

PHP function to show both ipv4 ipv6

由 爱⌒轻易说出口 提交于 2020-01-05 02:49:11
问题 I am configuring a server to be dual stack, allowing both ipv4 and ipv6. Then, I want to create a php page to show if the client machine is conecting via ipv4, ipv6 or both. I have tried $_SERVER['REMOTE_ADDR'] and getenvbyhost("REMOTE_ADDR") as well, but it returns only one or another never both. I also tried the below code function isIPv6($ip) { if(filter_var($ip, FILTER_VALIDATE_IP)) { if(filter_var($ip, FILTER_FLAG_IPV6)) { //It is IPv6 indeed. } else { //It is IPv4 } } else { // Not a

Sending IPv6 multicast packets through a specific network interface

由 久未见 提交于 2020-01-04 05:51:29
问题 I am trying to send IPv6 UDP packets to all of the nodes on the local network segment, in python, over Windows. I have several network interfaces in my computer, and I want to know how to specify the network interface for sending the packets. I have tried sending the packets to the multicast address ff02::1, using socket.sendto (without binding), but the packets are sent in the wrong network interface. Any idea how can I specify the network adapter? (I read about BINDTODEVICE, but it won't

getaddrinfo sorting IPv4 before IPv6 for localhost?

由 一个人想着一个人 提交于 2020-01-04 05:22:50
问题 I wrote a very simple test program for getaddrinfo: #include <sys/types.h> #include <sys/socket.h> #include <netdb.h> #include <stdio.h> #include <string.h> int main() { struct addrinfo hints; struct addrinfo *res, *rp; char hoststr[64], servstr[8]; memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_PASSIVE; getaddrinfo(NULL, "9998", &hints, &res); for (rp = res; rp != NULL; rp = rp->ai_next) { getnameinfo(rp->ai_addr, rp->ai

Explain the instance properties of System.Net.IPAddress

由 为君一笑 提交于 2020-01-03 10:57:32
问题 I'm having a little trouble understanding the System.Net.IPAddress class, because I don't know where to look for a definition of what some of the properties are referring to. Specifically, what are: IPAddress.IsIPv6LinkLocal IPAddress.IsIPv6Multicast IPAddress.IsIPv6SiteLocal IPAddress.IsIPv6Teredo I will also happily accept an answer that points to a resource that explains these concepts. The MSDN site has proved insufficient. 回答1: IPAddress.IsIPv6LinkLocal A link-local address is an IP

Problems with iOS with IPv6 and Azure

由 这一生的挚爱 提交于 2020-01-02 05:45:07
问题 One of our Xamarin.iOS-Apps got rejected because the Service-URI seems to not be available from IPv6 networks. Starting 01.06.2016, Apple wants all iOS-Apps to be fully compatible in IPv6 only networks. It seems that Microsoft Azure is not supporting IPv6 yet. Has anyone faced similar problems and knows how to solve this? For the record, we are using MvvmCross as Framework. Update: This is Apple's Response: Hello, Thank you for resubmitting your app for review. However, the previous issue has

Can I use pcap library for receiving ipv6 packets?

由 非 Y 不嫁゛ 提交于 2020-01-02 05:38:08
问题 I am trying to convert hping3 to hping6. hping3 uses Pcap library to receive IPv4 packets. But I need to receive IPv6 packets. 回答1: That is possible. libpcap is able to catch anything on the wire. 回答2: Example using ETHERTYPE_IPV6 : static u_int16_t ether_packet(u_char *args, const struct pcap_pkthdr *pkthdr, co nst u_char *p) { struct ether_header *eptr = (struct ether_header*)p; assert(pkthdr->caplen <= pkthdr->len); assert(pkthdr->caplen >= sizeof(struct ether_header)); return eptr->ether

Get a remote MAC address via IPv6

由 允我心安 提交于 2020-01-02 04:19:06
问题 Is it possible to get the MAC from an another PC in the same Network via IPv6 (without WMI)? With IPv4 it is easy (ARP). IPv6 uses the "Neighbor Discovery Protocol" (NDP) to get the MAC address. Are there any methods in .Net for this? 回答1: You can run the external command "netsh int ipv6 show neigh", and filter out the host you are interested in. You should have contacted it just before that, so you know it is in the NC. If you want an API for that, use GetIpNetTable2 or, more directly,

基于IPV6数据分析

由 别说谁变了你拦得住时间么 提交于 2020-01-01 03:26:23
基于IPv6的数据包分析 一.实验拓扑 二、配置过程 1、给R1、R2、R3 手动配置地址，配置命令让R4、R5自动获取端口地址。 2、R1、R2、R3配置静态路由（以R2为例） （conf)#ipv6 route ::/0 2001:db8:74:1:1(下一跳的端口地址） 三/全局互通 四．抓包分析 128报文 作用：用于发送到目的节点，以使目标节点立即发回一个回送应答报文。 129报文 作用：当收到一个回送请求报文时，ICMPv6会用回送应答报文响 135报文（邻居NS请求） 作用：Type字段值为135，Code字段值为0，在地址解析中的作用类似于IPv4中的ARP请求报文。 134报文（路由宣告消息） 作用：每台路由器为了让二层网络上的主机和路由器知道自己的存在，定时都会组播发送RA报文，RA报文中会带有网络前缀信息，及其他一些标志位信息。RA报文的type字段值为134 136报文（邻居NA通告） 作用：Type字段值为136，Code字段值为0，类似于IPv4中的ARP应答报文 来源： https://www.cnblogs.com/jin311599/p/10574667.html

基于IPv6的数据包分析

由 旧巷老猫 提交于 2020-01-01 03:25:58
一.实验拓扑 二、配置过程 1、给R1、R2、R3 手动配置地址，配置命令让R4、R5自动获取端口地址。 2、R1、R2、R3配置静态路由（以R2为例） （conf)#ipv6 route ::/0 2001:db8:74:1:1(下一跳的端口地址） 三/全局互通 四．抓包分析 128报文 作用：用于发送到目的节点，以使目标节点立即发回一个回送应答报文。 129报文 作用：当收到一个回送请求报文时，ICMPv6会用回送应答报文响 135报文（邻居NS请求） 作用：Type字段值为135，Code字段值为0，在地址解析中的作用类似于IPv4中的ARP请求报文。 134报文（路由宣告消息） 作用：每台路由器为了让二层网络上的主机和路由器知道自己的存在，定时都会组播发送RA报文，RA报文中会带有网络前缀信息，及其他一些标志位信息。RA报文的type字段值为134 136报文（邻居NA通告） 作用：Type字段值为136，Code字段值为0，类似于IPv4中的ARP应答报文 来源： https://www.cnblogs.com/jin311599/p/10934186.html
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