ipv6

问题 I am trying to create a BSD socket to listen for messages from a specific IPv6 multicast address. I currently have no problem creating the socket listening on the correct address 0::0. The problem is that I am running on a small embedded linux server with multiple NICs; here the ipv6mr_interface field of the ipv6_mreq is important. By trial and error, I have determined that 0, 1 and 3 do not work, but 2, does (it gives me all IPv6 multicast messages to my address, ff05::3, arriving on the

问题 I am trying to create a BSD socket to listen for messages from a specific IPv6 multicast address. I currently have no problem creating the socket listening on the correct address 0::0. The problem is that I am running on a small embedded linux server with multiple NICs; here the ipv6mr_interface field of the ipv6_mreq is important. By trial and error, I have determined that 0, 1 and 3 do not work, but 2, does (it gives me all IPv6 multicast messages to my address, ff05::3, arriving on the

问题 I'm a student, and I'm trying to understand the idea behind IP addresses. I learn that typing in a url is the same as typing in the corresponding IP address - either way, we'll be directed to the same web page. I used the ping command to find the IP address of howstuffworks.com . I then typed that IP address in my browser ( google chrome ) but got this error : The requested URL was not found on this server. Why? I tried the same with google.com IP, and it worked fine. Also, the IP addresses

问题 I'm using java.net.Inet6Address to validate if an input string is a valid IPv6 address or not. Here is my code snippet: public static boolean isValidIPv6ddress(String address) { if (address.isEmpty()) { return false; } try { Object res = InetAddress.getByName(address); return res instanceof Inet6Address; } catch (final UnknownHostException ex) { return false; } } Unfortunately the above method returns true even for the following inputs which are invalid : System.out.println(isValidIPv6ddress(

问题 I'm trying to make a server to listen on both IPv4 and IPv6 in dual stack mode. I want the same port number for both IPv4 and IPv6 servers, and I want it to be on a random selection of port (using port "0") when I bind, each server get different port, and I want it to be the same. so I thought it should be done by the getaddrinfo function. But when I give it the "0" port it stays "0" in the addrinfo results, what cause each bind to give me different port number. My question : Is there a way

问题 I'm trying to port an ipv4 server/client to ipv6, but the compiler says SOCKADDR_IN6 is not declared in the scope. SOCKADDR_IN is declared but not SOCKADDR_IN6 . <Winsock2.h> is included. Any one have any ideas why it would be undeclared? 回答1: Microsoft's documentation for sockaddr_in6 says that it is defined in the ws2tcpip.h header, probably you need to include that. On Linux you'd need different includes, sys/socket.h and netinet/in.h . 回答2: I have currently found SOCKADDR_IN6 definition

问题 I am trying to port ipv4 applications to ipv6 but I can't bind the socket to the ipv6 address. The problem is here: err=bind(listening, (sockaddr*)&hint, sizeof(hint)); The err should be 0 but in this code it returns -1. What is going wrong ? SOCKET listening = socket(AF_INET6, SOCK_STREAM, 0); if (listening == INVALID_SOCKET) { cerr << "Can't create a socket! Quitting" << endl; return; } int err; // Bind the ip address and port to a socket sockaddr_in6 hint; hint.sin6_family = AF_INET6; hint

问题 I would like to understand how to convert a MAC adress to IPv6. For example: 00:01:04:76:2A:5C Should become FE80::0201:04FF:FE76:2A5C Could someone elaborate the conversion please ? We suppose an automatic configuration without random parameter for a local machin. 回答1: Conversion step by step from a MAC address (48 bits) to a IPv6 address (128 bits): take the mac address: 52:74:f2:b1:a8:7f throw ff:fe in the middle: 52:74:f2:ff:fe:b1:a8:7f reformat to IPv6 notation 5274:f2ff:feb1:a87f

问题 I would like to understand how to convert a MAC adress to IPv6. For example: 00:01:04:76:2A:5C Should become FE80::0201:04FF:FE76:2A5C Could someone elaborate the conversion please ? We suppose an automatic configuration without random parameter for a local machin. 回答1: Conversion step by step from a MAC address (48 bits) to a IPv6 address (128 bits): take the mac address: 52:74:f2:b1:a8:7f throw ff:fe in the middle: 52:74:f2:ff:fe:b1:a8:7f reformat to IPv6 notation 5274:f2ff:feb1:a87f

问题 I got an app rejection mail from apple which is below, We discovered one or more bugs in your app when reviewed on iPad and iPhone running iOS 10.0.2 on Wi-Fi connected to an IPv6 network. Specifically, app remains on splash screen upon launch. Based on their request i have created the NAT64 network on my Mac and shared that internet for the iPhone 5S device 10.0.2 os version , App was working fine, But apple says its not working with IPv6 Can anyone confirm that do i need to check anything