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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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 ...
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0answers
289 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. ...
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1answer
453 views

Prefer IPv6 over IPv4 in Windows Server 2003

I am running Windows server 2003 and my Firefox browser keeps using IPv4 instead of IPv6. Well at least http://ipv6-test.com/ says that my browser uses IPv4. How can I force it to prefer IPv6 over ...
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0answers
564 views

Can't ping Linux IPv6 bridge from host

I'm using a Linux box with two network interfaces as bridge (br0) and one system (X) behind the bridge with its own IPv6 address configured. Its other end is connected to a router. The bridge ...
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0answers
1k views

How to setup pfSense 2.0 for TunnelBroker.net?

What is the procedure to create an IPv6 tunnel in pfSense 2.0? pfSense 2.0 (RC3) supports creation of a GIF tunnels: The help is pretty generic, and pretty unhelpful: In pfSense 2.0, GIF ...
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2answers
872 views

DNS only for IPv6 requests (AAAA)

since my ISP is not offering IPv6 for the moment, i decided to use a tunnel from HE, however i have a problem with my DNS's (infact even with public ones like OpenDNS/GoogleDNS) and the problem is ...
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598 views

Safari proxy bypass for IPv6

I'm a first-time n00b on Mac (but have been doing computers since before PC's). This Mac has 2 VLANs, vlan0 in IPv4, vlan1 in IPv6. Safari can surf via IPv4 squid proxy OK. Safari can surf via IPv6 ...
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487 views

disable IPV6 on specific interface with redhat on vmware

I tried to disable IPv6 on specific interface using IPV6INIT=no on the interface script. its working great on all server accept ones that run on Vmware. any idea? im using redhat 5.2, on vmware ESX
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1answer
874 views

Windows 7: how to setup a Homegroup - IPv6 error?

Every time I try to setup a Homegroup I get an error message that I need to have IPv6 enabled. When I check the system it says that IPv6 is enabled.
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3answers
115 views

Can't access 127.0.0.1 from Windows 8.1

I have a really strange problem with my Windows 8.1 Pro laptop: I can't access 127.0.0.1 from any web browser. But wait, it gets weirder! The setup My OS has installed (among others) the following ...
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1answer
66 views

IpV6 No network access

I'm Currently using Windows 8 on my laptop, and windows 7 on my computer. They used to be connected by the homegroup, which was brilliant, but now they can't find eachother anymore. I've tried to ...
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1answer
859 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 ...
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3answers
2k views

ipv6 find all hosts in a prefix

Using the ping6 command you can find the link-local address of ipv6 hosts out of an interface using: ping6 -I eth0 ff02::1 This will ping everything in the subnet and so you can see what is out ...
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4answers
169 views

IPv6 and its various incarnations

Is there a way already in place to make use of IPv6 as a routable protocol? Is it possible to buy private IP addresses for IPv6 yet and if so who sells them? Would there be any performance advantage ...
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2answers
208 views

Can IPv6 traffic pass over an IPv4 network? [closed]

Consider the case where there are 2 computers using the IPV6 protocol that want to communicate with each other, and the packet(s) must pass through a network that uses the IPV4 protocol. Can the ...
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3answers
3k views

How can I switch off IPv6 ND RA transmissions in Linux?

I am working on Ubuntu 11.04. I want to switch off the IPv6 ND RA transmissions. How can I do this?
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2answers
398 views

Should I get a gigabit router with or without ipv6 support? [closed]

I'm in the process of getting a gigabit router so i can transfer files faster to and from my Lacie Network Space. I found a gigabit Router. Its performance is really good, however it doesnt support ...
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3answers
439 views

Slow wlan0 compared to eth0?

Note: DNS: using OpenDNS Wireless NIC: Intel Corporation PRO/Wireless 3945ABG Kernel module: iwl3945 uname -r 2.6.28-11-generic Release: Distributor ID: LinuxMint Description: Linux ...
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2answers
8k views

How to disable ipv6 in Linux Mint

Note: ip a | grep inet6 inet6 ::1/128 scope host inet6 fe80::21c:bfff:fe76:32ec/64 scope link lsb_release -a Distributor ID: LinuxMint Description: Linux Mint 7 Gloria - Main Edition Release: ...
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2answers
235 views

What is a typical and simple to remember example IPv6 subnet?

In IPv4 people often use subnets like 10.0.0.0 (10.0.0.1 - 10.0.0.254) or 192.168.0.0 Both of these are rather easy to remember. What is their alternative in IPv6? I know I can probably invent any ...
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2answers
371 views

How to get the ipv6 address marked with a specific scope?

If I run /sbin/ifconfig eth0 I get the following output: Link encap:Ethernet HWaddr <address hidden for privacy> inet ...
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2answers
769 views

Debugging IPv6 routing issues

I have been given a native (no tunneling etc) IPv6 /64 block by my ISP. My pfSense router has successfully got an address, and from its WAN interface I can for instance ping ipv6.google.com and get a ...
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2answers
939 views

Can't browse websites using IPv6

I have configured my Windows 7 to use IPv6 (auto IP & OpenDNS IPv6 DNS) / IPv4 disable. Now the problem is that only ipv6.google.com is working but no other website is opening. How do I access ...
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1answer
21 views

ip6tables causing slowness

When running commands like ntpq -p or apt-get update it takes a very long time to display the results. If I remove all the ipv6 rules, everything works fine. I checked syslog, and there's no iptables ...
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1answer
74 views

How can my program make IPv6 connections?

I see in Resource Monitor that my torrent client uTorrent makes many connections to addresses in IPv6 range. How can it be? My router is D-Link DIR-615 and has no any setting about IPv6. How can any ...
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3answers
1k views

Why does IPv6 use 128 bit addressing? [closed]

When I first heard about IPv6, I just assumed that it doubled the number of addressing bits in IPv4, from 32 bits to 64 bits. This would have been enough for at least 2.6 billion addresses for each ...
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2answers
3k views

Unable to close SSHD on IPv6 TCP port

I'm running Ubuntu 10.4 and I've tried disabling IPv6 as I don't currently need it. I rand the following to disable IPv6 and then rebooted my server: echo "#disable ipv6" | sudo tee -a ...
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3answers
54 views

How to test if DNS is working over IPv6

My two VPS servers host my DNS. I have it setup to work with both IPv4 and IPv6. I'm able to test IPv4 without a problem. How can I test IPv6? I tried entering the IPv6 address in ...
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1answer
71 views

How do I discover the valid lifetime and preferred lifetime of IPv6 addresses on OS X?

On Linux, I can do ip -6 addr list and every address comes with a valid_lft and preferred_lft. What is the OS X equivalent? ifconfig doesn't include this information in its output.
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2answers
1k views

radvd won't accept non-/64 subnets

I'm trying to set up radvd on a 6RD configuration (on Linux), where I have a /64 subnet, and I'm trying to use it on two distinct physical networks, so I'm trying to give each of them a /80 subnet. ...
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1answer
136 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 ...
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1answer
2k 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 ...
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1answer
2k views

Debian - IPv6 disable 'Stateless Address Autoconfiguration'

I've installed Debian 6.0.6 running on kernel 2.6.32-5-amd64 and after the installation I assigned a static IPv6 address to the eth0 interface. This is how my /etc/network/interfaces file looks like: ...
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3answers
754 views

IPv6 Geolocation

I keep regular tabs on where my accounts are accessed from, and sometimes search the locations of IPv4 addresses. I'm now seeing accounts / machines I keep track of being accessed from IPv6 ...
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1answer
86 views

IPv6 Address Formatting and Lookup

I'm seeing an IPv6 address that ends in :f68. Is shorthand for :0f68 or :f680? I'm trying to do a lookup on it and for some reason doesn't like the 3 digit segment. Thanks!
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2answers
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IPv6 SSM multicast: is it built in or do you have to use another protocol like PIM-SM with it?

I'm trying to understand how integrated SSM multicast is to IPv6. Is it built in and sent solely by ICMPv6 messages or do you have to run something extra like PIM-SM? The reason I as is I've seen ...
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3answers
1k views

Should I use a static IP address? If so what kind?

Last night I managed to get my local PC running as a server using port 80 and my IP address. After restarting my machine it stopped working. I was told I need to make a static IP address. My ...
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3answers
11k views

How to configure Windows to use an IPv6 connection?

"Looking towards IPv6": ...we're pleased to let you know that Google search is also available over IPv6 at ipv6.google.com (you'll need an IPv6 connection to view it). I tried visiting ...
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1answer
18 views

Giving each domain unique IPV6 address for posfix SMTP

Today I faced a problem after setting up postfix as my mailserver and sending e-mail to a gmail email, which responded me with the following message: Our system has detected that this ...
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2answers
55 views

I'm trying to open query.yahooapis.com but curl is trying to use IPV6 even if I only have IPV4 enabled

When I try to call query.yahooapis.com with curl it's trying to use the ipv6 address but IPV6 is disabled on my computer $ curl -v 'http://query.yahooapis.com/' * Hostname was NOT found in DNS cache ...
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1answer
69 views

How can I add an IPv6 address with a scope ID to the ssh config file?

On Linux, an IPv6 address can have a scope ID at the end with a percent sign before it. For example: fe80::1%usb0. See Why is there a percent sign '%' in the IPv6 address? I want to add such an entry ...
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1answer
256 views

Access IPv6 computer from IPv4-only network. Is it possible?

I recently changed from an ADSL 10 MB to a GPON 40 MB and since then I'm having a bad headache. My old ISP (ADSL) gave me always a valid public IPv4. Sometimes it changed but there was no problem ...
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1answer
132 views

Is the PULSE_SERVER environment variable supposed to take an IPv6 address?

I am currently struggling with Avahi. Before debugging further, I wanted to check the sanity of my Pulseaudio setup, so I commanded 'export PULSE_SERVER=10.4.0.202 && mplayer sound.mp3' which ...
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1answer
92 views

Where is this IPv6 address coming from?

When I run ifconfig (after rebooting) on my FreeBSD 8.4 system it outputs this: inet6 fe80::225:90ff:fe10:7e84%em0 prefixlen 64 scopeid 0x5 inet6 xxxx:xxxx:1009::2 prefixlen 64 ...
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2answers
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Linux Networking: How to forward incoming IPv6 connections from the internet via a second IPv4 interface to other computers in a local network?

I have some kind of Debian server-gateway-zombie that has two network interfaces: eth0 and wlan0 (yeah, wlan0... I know.). eth0 is connected to a internet cable modem that assigns an IPv6 address to ...
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1answer
182 views

Firefox and Chrome redirecting IPv6 to Google search

There are already answers how to teach those browsers to resolve the targets (enable ipv6 dns), but my problem is, when I enter an address (including http): http://2001:db8:0:1::10:1ff ...
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2answers
2k views

Get IPv6 correctly through another router

My ISP is Unitymedia NRW, Germany. It it a cable (like TV) ISP which has given me a Technicolor TC7200 modem/router. The ISP uses DS-Lite, so I only have a public IPv6 address, and no IPv4 address. ...
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1answer
367 views

Configuring IPv6 on Debian - Global temporary address

My mac generates a daily temporary ipv6 for outbound connection usage, is there something similar that's available on Debian? Thank you! -Pablo
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1answer
2k views

How to deal with Dual-Stack Lite and incoming connections

My ISP (german cable ISP Unitymedia) forced me to use DS-Lite / Dual Stack Lite because he ran out of IPv4 addresses. Common problems with that setup are: interrupted connections (i.e. in online ...
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1answer
146 views

What is the difference between IPv4 and IPv6 in terms of binary?

I have done some research on IPv4 and how to convert IP addresses to binary and vice versa. I also understand that IPv6 contains 4 x the amount of IPv4 binary per section. I just need to thoroughly ...