Tagged Questions

IPv6 is the newest version of the Internet Protocol. It is designed to supersede IPv4 as it offers many more addresses.

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0
votes
1answer
97 views

Unknown IP address is kept loggin into my email account

My Google account showed me that this IP address (2601:2:1080:6bf:596c:862:733b:9ccb) has logged into my email account multiple times. Is there anyway to track this IP address? This is not what a ...
2
votes
1answer
103 views

Getting Correct IPv6 Address from given prefix

On my windows xp machine, i have this information: IP Address: fcb1:cafe:1:9e33::2 Default Gateway: fcb1:cafe:1:9e33::1 It works fine, and i can ping the gateway. However now there is another ...
0
votes
2answers
98 views

How do I tell if my Macbook supports IPv6?

I want to know whether my Macbook can handle IPv6. How do I find that out?
0
votes
1answer
464 views

How to set up a IPv6 to IPv4 gateway for VPS [closed]

Condition IPv6 and IPv4 enabled VPS IPv6 and IPv4 enabled Client(Could be PC or Mac) Problem Client get restricted IPv4 connection whereas IPv6 connection is unlimited. Solution Client connects ...
0
votes
0answers
35 views

Set an ipv6-specific MTU

I have a router which has ipv6 connectivity through a tunneling mechanism. The router announces a prefix in the LAN, and clients get native ipv6 connectivity on their point of view. The MTU of the LAN ...
-1
votes
1answer
218 views

Curl with ipv6 not working by default

I am trying to curl ipv6 adresses, but without success. If i try lets say: curl https://google.com I wait for a timeout and get network unreachable If i force ipv4, everything is fine. ...
2
votes
1answer
507 views

disable IPv6 autoconf (MAC-based) IPv6 address without disabling privacy addresses?

Is it possible to configure the Linux kernel to automatically get the RFC4941 temporary (privacy) IPv6 addresses without getting the RFC4862 public (MAC-based) IPv6 address? With the following sysctl ...
0
votes
1answer
395 views

I get an IPv6 address from my ISP but can't use any IPv6 services

When I enable DHCPv6 with Prefix Delegation on my router, it gets an IPv6 address from my ISP (TWC) in this block, and my PC will get one automatically as well. When I try an IPv6 test site it fails ...
5
votes
1answer
296 views

Use IPv6 temporary address only with remote peers

I think this question concerns the interaction between the configurable Default Address Selection algorithm defined by RFC-3484 and the temporary addresses defined by RFC-4941, though the solution may ...
2
votes
0answers
564 views

Window Server 2012 throttling incoming IPv6 network file sharing operations

Short version IPv4 download from server: fast IPv4 upload to server: fast IPv6 download from server: fast IPv6 upload to server: slow Full version I am copying files from a GBe desktop to a GBe ...
0
votes
1answer
2k views

How do I install the Microsoft 6to4 Adapter?

I'm unable to see the 6to4/Teredo adapter anywhere in my Windows 7 installation. In my Device Manager, the only network adapters are my wireless Realtek card, and "TAP-Win32 Adapter OAS" which is for ...
0
votes
1answer
500 views

Some sites extremely slow! How to determine if its IPv6? and disable it?

My internet is extremely slow on some sites, the famous ones. Google, Facebook, etc. But then, the very next minute, they are superfast. I got to know from somewhere that this is due to clogging and ...
1
vote
1answer
77 views

Is there any way to serve http from behind a typical home NAT/router (from inside a LAN)

I seem to remember reading that something in IPv6 could help with this. I thought I would ask here to see if per-to-peer http could be a possibility these days. I am familiar with hole-punching, but I ...
1
vote
1answer
174 views

What prevents my ISP from assigning me a dynamic IPv4 address and static IPv6 address(es)? [closed]

Till now I never heard of an Internet Service Provider anywhere on the world, that assigns static IPv6 addresses besides the one dynamic IPv4 address, to private customers. Is there a technical ...
1
vote
1answer
109 views

In tspc ipv6 tunnelling, does tunnel broker required for ipv4 to ipv4 communication?

I am new in embedded systems and trying to add support the ipv6 network availability in my new product but I have understood that, First of all, My system is connected to IPv4 ISP and I want to ...
1
vote
1answer
2k views

Cannot get an IPv6 address on Debian

I am using Debian 7 with the newest updates. I have a block of IPv6 adresses from my provider and, according to the provider the DHCP server is setup so that I should get an ip automatically (I even ...
0
votes
0answers
168 views

::1 vs 127.0.0.1 for iis local sites

I have a local site which is running at admin.mysite.com. I have set up the iis config to point to the correct folder. When i enter the following entry in my hosts folder 127.0.0.1 admin.mysite.com ...
0
votes
1answer
81 views

what does this ping listing mean — it does not have an IP address but some hex numbers

Something's screwy on our network at work, and I'm no longer able to reach a server where I'm developing a database application. I'm not the network admin, and he's out sick. When, from my ...
1
vote
1answer
289 views

Ping magically works on Windows 8

There's a remote machine named JUPITER, accessible through Win8 DirectAccess. Then just after IPCONFIG /FLUSHDNS, I observe the following: ping JUPITER works and pings to an IPV6 address. nslookup ...
2
votes
2answers
76 views

Ask for IPv6 address through IPv4

I am working on a project for discovering IPv6 host over the internet and I have a question. Is there any way that I can send a request to an IPv4 address and return me back their IPv6 address (if it ...
1
vote
1answer
437 views

what's IPv6 analogue for IPv4 `arp -an` and “arp who-has”?

In IPv4 world, when you want to talk to another computer, you ask which MAC address claims a given IPv4 address, the arp who-has ... tell ... exchange as per tcpdump, and a cache of such mappings from ...
0
votes
1answer
359 views

How to make a OpenVPN tunnel between home and server network with IPv6 support

I'm build a OpenVPN tunnel between my home network and my server. Here's my current scenario: Server (IPv4: 198.x.x.5) IPv6: 2001:xxx:xxx:xxx::abcd) <-----------> My ISP (CGN) ...
1
vote
1answer
519 views

Not able IPv6-tunnel using miredo for Mac OS X

I have been trying to setup Miredo on OS X 10.7.5 using the Miredo Installer for OS X When Miredo starts after installation, the check box next to the "Teredo Tunnel" is still red and I am not able ...
-1
votes
1answer
158 views

How to use remote IPv6 over ssh? [closed]

I have a cheap VPS with 1 IPv4 and 5 IPv6. I want to use 1 of the unused IPv6 connections on my computer so I can start using IPv6 Does anyone have any ideas? I would prefer an all OpenSSH based ...
1
vote
0answers
38 views

No Internet Access for Metro Apps [duplicate]

I have a Laptop running Windows8 that is connected to the Internet via LAN. Because I do not have a WiFi router at the moment, I am sharing Internet over a hostednetwork (ICS enabled for the LAN ...
4
votes
1answer
175 views

Get IPv6 address of an IPv4 machine?

Given two machines on a local network, both connected via IPv4 and IPv6, can machine A get the IPv6 of machine B if it has machine B's IPv4 address? I presume the ARP cache should be able to provide ...
2
votes
2answers
2k views

How to get both IPv4 and IPv6 dynamic address

Running dhclient gets me an IPv4 address. Running dhclient -6 gets me an IPv6 address. And the man page says you can't combine v4 and v6. So how to get both v4 and v6 addresses at the same time?
2
votes
0answers
138 views

Forward IPsec tunnel from IPv4 endpoint to IPv6 endpoint

I have a new ISP and only have a Dual Stack - lite connection now. That means I can't access my router via IPv4 anymore, since the external IPv4 address is private. I have native IPv6 connectivity. ...
0
votes
2answers
2k views

TCPDUMP: are these args consistent or meaningless together?

I'm using tcpdump on routing software, and trying to check whether the presence of ip/ip6 protocol with an ip6/ip host (i.e., the other IP family), or else specifying a mix of IPv4 and IPv6 IPs as ...
2
votes
2answers
2k views

Routing IPv6 traffic through Debian pptpd into Hurricane Electric's IPv6 tunnel

I have set up a tunnel using Hurricane Electric's services on a Debian machine. It seems to work alright; I can ping6 ipv6.google.com and open it in links. I've also set up a PPTP daemon on the ...
1
vote
1answer
288 views

Quality of service in IPV6 [closed]

IPv6 was developed to solve some of the problems of IPv4, such as QoS. We know in IPV4 based on TOS values, a packet would be placed in a prioritized outgoing queue,or take a route with appropriate ...
-2
votes
2answers
123 views

How to Get the size of IPv6 header? [closed]

I know there is IHL field in IPV4 which is Internet Header Length.Since an IPv4 header may contain a variable number of options, this field specifies the size of the header. But there is no IHL or ...
0
votes
1answer
184 views

netsvc (dnscache,wecsvc,tapisvc,nlasvc,cryptsvc) sending stream to address 808:808::3821:ae83:100:20

i have win 8 installed on my computer, using pppoe connection with ipv6 disabled. but when i check on "resmon" i saw there is netsvc sending stream to 808:808::3821:ae83:100:20 address. i try to ...
0
votes
1answer
391 views

Why is UDP traceroute not working for IPv6?

I have just gotten dual stack support on my CMTS and enabled IPv6 on my router. I have debian installed on my PC, and I am noticing the default traceroute (uses UDP on linux) is only making it to my ...
2
votes
1answer
3k views

wireshark: how to capture traffic between guest and host OS?

I'm trying to set up a lab to demonstrate ipv6 attack and detection mechanism on my Macbook. This is my set up with virtualbox: Host OS: OS X 10.8.2 IPv6 automatically, wireless connection Geust OS: ...
0
votes
1answer
150 views

IPv6-connected FreeBSD server is not available via LAN

My Setup I have a FreeBSD server with the following output of uname -a: FreeBSD glacier 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012 ...
0
votes
1answer
518 views

How to set up Teredo tunnel and share it?

How do I enable Teredo tunneling to the default Microsoft server mentioned in the Wikipedia article (teredo.ipv6.microsoft.com)? Google did not find any documentation, reliable or otherwise, to do ...
1
vote
1answer
133 views

Can ping but cannot search

I have a problem with IPv6 connectivity. I have searched a lot of web sites, but I cannot find a solution. Here is the ping output: Ping ipv6.l.google.com [2404:6800:4005:c00::67] (with 32 bytes of ...
1
vote
2answers
419 views

Cisco - client can ping but router not

I configured a HE.net IPv6 Tunnel on my router which has two WAN ports. The strange thing is that all clients are able to ping IPv6 hosts on Internet, but my router cannot ping anyone. Here's the ...
6
votes
4answers
23k views

How to disable ipv6 on a specific interface in linux?

Could someone tell me how to disable ipv6 auto-config on a specific network interface in CentOS? The current situation is: A PC has two network adapters eth0 and eth1 that are connecting to the same ...
1
vote
1answer
163 views

How to troubleshoot lost 6to4 packets?

On my VDS, both 6to4 and Teredo seem to work poorly (packet loss is about 40%). just-ping.com shows packet loss 10%-80% both for 6to4 and for Teredo address, but 0% for IPv4 address. When running ...
0
votes
1answer
1k views

linux ipv6 default route to loopback

I am trying to understand what is the reason that in recent linux kernels there is ipv6 default route to loopback ::/0 :: !n -1 1 4 lo is it ...
0
votes
1answer
502 views

Setup IPv6 in IPv4 tunnel on DLink DIR-615

Recently I wanted to setup IPv6 for my home network. I signed up for tunnelbroker.net service and was provided with IPs. Then I configured the IP address in my DIR-615. But It's not working.. ...
0
votes
1answer
234 views

Does presence of Link local address mean the system support IPv6?

I am trying to implement dual stack for IPv6 support in a IPv4 system. I have configured a DHCP server which gives IPv4 and IPv6 address to the device. My PC and the VM running on it gets both, IPv6 ...
1
vote
0answers
135 views

Why is “localhost” slower than “127.0.0.1” in Google Chrome - Windows 8? [duplicate]

There is a very similar previous question and answer, but for windows 7 and/or earlier versions of Google Chrome, here: Is there a way to disable IPv6 in Google's Chrome? That solution no ...
0
votes
1answer
173 views

IPv6 routing with multi hop network - using /64 as prefix

I have a scenario, where my PC(SYSTEM1) acts as a router/packet forwarder. And i wanted to have my other PC(SYSTEM2) connected to router(R1) via SYSTEM1. If the subnet length is /48, i know it is easy ...
1
vote
1answer
1k views

How can I completely disable IPv6 on Debian (squeeze)?

I'm running Debian Squeeze (with a stock 2.6.32 kernel). I'd like to completely disable any kind of IPv6 traffic. Can I do this? There doesn't seem to be any relevant module loaded. Perhaps some ...
1
vote
1answer
963 views

DNS Resolution Issue - Error 105

I cannot connect to the internet. I am having issues resolving DNS (Error 105) in all browsers on my Dell XPS 15 laptop running Windows 8 64x. There is also a dual boot with linux Mint running that ...
1
vote
1answer
3k views

6to4 vs ISATAP vs Teredo Adapters

I understand that all three adapters mentioned in the title are related to transitioning IPv4 to IPv6. ISATAP: Transmits IPv6 packets between dual-stack nodes on top of an IPv4 network. Teredo: IPv6 ...
0
votes
1answer
582 views

windows 7 didn't do aaaa record lookup

My laptop is installed with Windows 7 SP1 Ultimate , 64 bit version. Recently, I went to the university, which only provides ipv6. I've built a OpenVPN Tunnel to handle ipv4 traffic, but I've found ...