Generating the next value of a valid IPV6 format IP Address.

Question

How can I generate a IPV6 Address pool. I have a valid Form IP and To IP in IPV6 format. I want to generate all the ips in between the form and to IP. Any type of help is greatly appreciated.

regards

Swapnasagar

Swapnasagar Panda · Answer

Hi, I found the way how to generate the proper output. It's very simple .. First thing is IPV6 format is not inbuild in Windows XP. Need to do some configuration as follows :-- > Open the command prompt > Type there IPV6 > It ll list u all the options and then type IPV6 install And thus U r done. The 1st format of code(provided above) works fine. Note :-- No need of any type of configuration for windows vista and windows 7. For more info. :-- http://www.ghacks.net/2011/02/06/how-to-enable-ipv6-on-windows-xp/ Thanks a lot vulpes for all the help u provide....

Vulpes · Answer

Here's a version of the program which doesn't use the IPAddress class at all. The addresses it's producing are not abbreviated (i.e. they contain leading zeros and 0000's) though it could be changed to cope with that if needed: using System; using System.Collections.Generic; using System.Net; class Program { static void Main() { string address1 = "2001:0db8:85a3:0000:0000:8a2e:0370:7334"; string address2 = "2001:0db8:85a3:0000:0000:8a2e:0370:7383"; List pool = GetIPv6AddressBlock(address1, address2); foreach(string address in pool) Console.WriteLine(address); Console.ReadKey(); } static List GetIPv6AddressBlock(string from, string to) { List addresses = new List (); ushort[] words1 = GetAddressWords(from); ushort[] words2 = GetAddressWords(to); addresses.Add(ToAddress(words1)); while(!AreEqual(words1, words2)) { AddOne(words1); addresses.Add(ToAddress(words1)); } return addresses; } static void AddOne(ushort[] words) { for(int i = words.Length - 1; i >= 0; i--) { if (words[i] { words[i]++; return; } words[i] = 0; } } static bool AreEqual(ushort[] words1, ushort[] words2) { if (words1.Length != words2.Length) return false; for(int i = 0; i { if (words1[i] != words2[i]) return false; } return true; } static ushort[] GetAddressWords(string address) { string[] wordStrs = address.Split(':'); ushort[] words = new ushort[8]; for(int i = 0; i { words[i] = Convert.ToUInt16(wordStrs[i], 16); } return words; } static string ToAddress(ushort[] words) { string[] wordStrs = new string[8]; for(int i = 0; i { wordStrs[i] = words[i].ToString("x4"); } return String.Join(":", wordStrs); } } The output should be: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 2001:0db8:85a3:0000:0000:8a2e:0370:7335 2001:0db8:85a3:0000:0000:8a2e:0370:7336 2001:0db8:85a3:0000:0000:8a2e:0370:7337 2001:0db8:85a3:0000:0000:8a2e:0370:7338 2001:0db8:85a3:0000:0000:8a2e:0370:7339 2001:0db8:85a3:0000:0000:8a2e:0370:733a 2001:0db8:85a3:0000:0000:8a2e:0370:733b 2001:0db8:85a3:0000:0000:8a2e:0370:733c 2001:0db8:85a3:0000:0000:8a2e:0370:733d 2001:0db8:85a3:0000:0000:8a2e:0370:733e 2001:0db8:85a3:0000:0000:8a2e:0370:733f 2001:0db8:85a3:0000:0000:8a2e:0370:7340 2001:0db8:85a3:0000:0000:8a2e:0370:7341 2001:0db8:85a3:0000:0000:8a2e:0370:7342 2001:0db8:85a3:0000:0000:8a2e:0370:7343 2001:0db8:85a3:0000:0000:8a2e:0370:7344 2001:0db8:85a3:0000:0000:8a2e:0370:7345 2001:0db8:85a3:0000:0000:8a2e:0370:7346 2001:0db8:85a3:0000:0000:8a2e:0370:7347 2001:0db8:85a3:0000:0000:8a2e:0370:7348 2001:0db8:85a3:0000:0000:8a2e:0370:7349 2001:0db8:85a3:0000:0000:8a2e:0370:734a 2001:0db8:85a3:0000:0000:8a2e:0370:734b 2001:0db8:85a3:0000:0000:8a2e:0370:734c 2001:0db8:85a3:0000:0000:8a2e:0370:734d 2001:0db8:85a3:0000:0000:8a2e:0370:734e 2001:0db8:85a3:0000:0000:8a2e:0370:734f 2001:0db8:85a3:0000:0000:8a2e:0370:7350 2001:0db8:85a3:0000:0000:8a2e:0370:7351 2001:0db8:85a3:0000:0000:8a2e:0370:7352 2001:0db8:85a3:0000:0000:8a2e:0370:7353 2001:0db8:85a3:0000:0000:8a2e:0370:7354 2001:0db8:85a3:0000:0000:8a2e:0370:7355 2001:0db8:85a3:0000:0000:8a2e:0370:7356 2001:0db8:85a3:0000:0000:8a2e:0370:7357 2001:0db8:85a3:0000:0000:8a2e:0370:7358 2001:0db8:85a3:0000:0000:8a2e:0370:7359 2001:0db8:85a3:0000:0000:8a2e:0370:735a 2001:0db8:85a3:0000:0000:8a2e:0370:735b 2001:0db8:85a3:0000:0000:8a2e:0370:735c 2001:0db8:85a3:0000:0000:8a2e:0370:735d 2001:0db8:85a3:0000:0000:8a2e:0370:735e 2001:0db8:85a3:0000:0000:8a2e:0370:735f 2001:0db8:85a3:0000:0000:8a2e:0370:7360 2001:0db8:85a3:0000:0000:8a2e:0370:7361 2001:0db8:85a3:0000:0000:8a2e:0370:7362 2001:0db8:85a3:0000:0000:8a2e:0370:7363 2001:0db8:85a3:0000:0000:8a2e:0370:7364 2001:0db8:85a3:0000:0000:8a2e:0370:7365 2001:0db8:85a3:0000:0000:8a2e:0370:7366 2001:0db8:85a3:0000:0000:8a2e:0370:7367 2001:0db8:85a3:0000:0000:8a2e:0370:7368 2001:0db8:85a3:0000:0000:8a2e:0370:7369 2001:0db8:85a3:0000:0000:8a2e:0370:736a 2001:0db8:85a3:0000:0000:8a2e:0370:736b 2001:0db8:85a3:0000:0000:8a2e:0370:736c 2001:0db8:85a3:0000:0000:8a2e:0370:736d 2001:0db8:85a3:0000:0000:8a2e:0370:736e 2001:0db8:85a3:0000:0000:8a2e:0370:736f 2001:0db8:85a3:0000:0000:8a2e:0370:7370 2001:0db8:85a3:0000:0000:8a2e:0370:7371 2001:0db8:85a3:0000:0000:8a2e:0370:7372 2001:0db8:85a3:0000:0000:8a2e:0370:7373 2001:0db8:85a3:0000:0000:8a2e:0370:7374 2001:0db8:85a3:0000:0000:8a2e:0370:7375 2001:0db8:85a3:0000:0000:8a2e:0370:7376 2001:0db8:85a3:0000:0000:8a2e:0370:7377 2001:0db8:85a3:0000:0000:8a2e:0370:7378 2001:0db8:85a3:0000:0000:8a2e:0370:7379 2001:0db8:85a3:0000:0000:8a2e:0370:737a 2001:0db8:85a3:0000:0000:8a2e:0370:737b 2001:0db8:85a3:0000:0000:8a2e:0370:737c 2001:0db8:85a3:0000:0000:8a2e:0370:737d 2001:0db8:85a3:0000:0000:8a2e:0370:737e 2001:0db8:85a3:0000:0000:8a2e:0370:737f 2001:0db8:85a3:0000:0000:8a2e:0370:7380 2001:0db8:85a3:0000:0000:8a2e:0370:7381 2001:0db8:85a3:0000:0000:8a2e:0370:7382 2001:0db8:85a3:0000:0000:8a2e:0370:7383

Vulpes · Answer

Sorry, I don't understand the problem. When I run the above program the output is in (abbreviated) IPv6 format as follows: 2001:db8:85a3::8a2e:370:7334 2001:db8:85a3::8a2e:370:7335 2001:db8:85a3::8a2e:370:7336 2001:db8:85a3::8a2e:370:7337 2001:db8:85a3::8a2e:370:7338 2001:db8:85a3::8a2e:370:7339 2001:db8:85a3::8a2e:370:733a 2001:db8:85a3::8a2e:370:733b 2001:db8:85a3::8a2e:370:733c 2001:db8:85a3::8a2e:370:733d 2001:db8:85a3::8a2e:370:733e 2001:db8:85a3::8a2e:370:733f 2001:db8:85a3::8a2e:370:7340 2001:db8:85a3::8a2e:370:7341 2001:db8:85a3::8a2e:370:7342 2001:db8:85a3::8a2e:370:7343 2001:db8:85a3::8a2e:370:7344 2001:db8:85a3::8a2e:370:7345 2001:db8:85a3::8a2e:370:7346 2001:db8:85a3::8a2e:370:7347 2001:db8:85a3::8a2e:370:7348 2001:db8:85a3::8a2e:370:7349 2001:db8:85a3::8a2e:370:734a 2001:db8:85a3::8a2e:370:734b 2001:db8:85a3::8a2e:370:734c 2001:db8:85a3::8a2e:370:734d 2001:db8:85a3::8a2e:370:734e 2001:db8:85a3::8a2e:370:734f 2001:db8:85a3::8a2e:370:7350 2001:db8:85a3::8a2e:370:7351 2001:db8:85a3::8a2e:370:7352 2001:db8:85a3::8a2e:370:7353 2001:db8:85a3::8a2e:370:7354 2001:db8:85a3::8a2e:370:7355 2001:db8:85a3::8a2e:370:7356 2001:db8:85a3::8a2e:370:7357 2001:db8:85a3::8a2e:370:7358 2001:db8:85a3::8a2e:370:7359 2001:db8:85a3::8a2e:370:735a 2001:db8:85a3::8a2e:370:735b 2001:db8:85a3::8a2e:370:735c 2001:db8:85a3::8a2e:370:735d 2001:db8:85a3::8a2e:370:735e 2001:db8:85a3::8a2e:370:735f 2001:db8:85a3::8a2e:370:7360 2001:db8:85a3::8a2e:370:7361 2001:db8:85a3::8a2e:370:7362 2001:db8:85a3::8a2e:370:7363 2001:db8:85a3::8a2e:370:7364 2001:db8:85a3::8a2e:370:7365 2001:db8:85a3::8a2e:370:7366 2001:db8:85a3::8a2e:370:7367 2001:db8:85a3::8a2e:370:7368 2001:db8:85a3::8a2e:370:7369 2001:db8:85a3::8a2e:370:736a 2001:db8:85a3::8a2e:370:736b 2001:db8:85a3::8a2e:370:736c 2001:db8:85a3::8a2e:370:736d 2001:db8:85a3::8a2e:370:736e 2001:db8:85a3::8a2e:370:736f 2001:db8:85a3::8a2e:370:7370 2001:db8:85a3::8a2e:370:7371 2001:db8:85a3::8a2e:370:7372 2001:db8:85a3::8a2e:370:7373 2001:db8:85a3::8a2e:370:7374 2001:db8:85a3::8a2e:370:7375 2001:db8:85a3::8a2e:370:7376 2001:db8:85a3::8a2e:370:7377 2001:db8:85a3::8a2e:370:7378 2001:db8:85a3::8a2e:370:7379 2001:db8:85a3::8a2e:370:737a 2001:db8:85a3::8a2e:370:737b 2001:db8:85a3::8a2e:370:737c 2001:db8:85a3::8a2e:370:737d 2001:db8:85a3::8a2e:370:737e 2001:db8:85a3::8a2e:370:737f 2001:db8:85a3::8a2e:370:7380 2001:db8:85a3::8a2e:370:7381 2001:db8:85a3::8a2e:370:7382 2001:db8:85a3::8a2e:370:7383

Swapnasagar Panda · Answer

Thanks Vulpes, your code is working in gr8 extent. But the only problem is while showing the output. See we are giving IP in the string format, but the "parse" method making it to an IPAddress Instance , so while displaying back also the IPAddress Instance coming, not the string format. e.g:-- "2001:0db8:85a3:0000:0000:8a2e:0370:7334" --> Input IP 2001:0db8:85a3:0000:0000:8a2e:3.112.115.52 --> Output[which is the IP Instance generated by "parse" Method ]. 2001:0db8:85a3:0000:0000:8a2e:3.112.115.53 --> next op and so on. Any Help regarding this is warmly Accepted. Thanks in Advance.

Vulpes · Answer

Try the following: using System; using System.Collections.Generic; using System.Net; class Program { static void Main() { string address1 = "2001:0db8:85a3:0000:0000:8a2e:0370:7334"; string address2 = "2001:0db8:85a3:0000:0000:8a2e:0370:7383"; List pool = GetIPv6AddressBlock(address1, address2); foreach(string address in pool) Console.WriteLine(address); Console.ReadKey(); } static List GetIPv6AddressBlock(string from, string to) { List addresses = new List (); IPAddress ipa1 = IPAddress.Parse(from); byte[] bytes1 = ipa1.GetAddressBytes(); IPAddress ipa2 = IPAddress.Parse(to); byte[] bytes2 = ipa2.GetAddressBytes(); addresses.Add(ipa1.ToString()); while(!AreEqual(bytes1, bytes2)) { AddOne(bytes1); addresses.Add(new IPAddress(bytes1).ToString()); } return addresses; } static void AddOne(byte[] bytes) { for(int i = bytes.Length - 1; i >= 0; i--) { if (bytes[i] { bytes[i]++; return; } bytes[i] = 0; } } static bool AreEqual(byte[] bytes1, byte[] bytes2) { if (bytes1.Length != bytes2.Length) return false; for(int i = 0; i { if (bytes1[i] != bytes2[i]) return false; } return true; } }

Generating the next value of a valid IPV6 format IP Address.

Answers (5)