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

learn more… | top users | synonyms

5
votes
1answer
240 views

Is there a way to test alternate IPv4 routes?

i am using Hurricane Electric's Tunnel Broker service to get IPv6 connectivity. TunnelBroker lets you have access to the IPv6 Internet by using a standard IPv6 tunneling protocol. You send IPv6 ...
4
votes
1answer
2k views

Does IPV6 matter when choosing a new switch for home network?

Looking to upgrade my Fast Ethernet home network switch to a Gigabit Ethernet switch. Figured I should make sure that the new device supports IPV6, but in looking at the specs of a few switches, I ...
4
votes
3answers
863 views

How to get started with TCP/IP v6?

Now and then there is "news" about that the IP numbers will run out in X years, and we must change to TCP/IP v6... And even though this crisis never really happens it has waken a question, how do ...
4
votes
4answers
3k views

MTU is 1500, why the first fragment length is 1496 in IPv6?

ping6 ipv6Address -s 1500 This command will result a fragment. Observed by wireshark, the 1st fragment packet's length is 1496 (from layer 3). Since the MTU is 1500, I am confused by this 1496 ...
4
votes
1answer
2k views

Why does my Windows have hundreds of temporary IPv6 addresses?

My ISP enabled IPv6 for me a few weeks ago. Now I noticted that Windows (8.1) gets a lot of temporary IPv6 addresses. ipconfig has the following output (real addresses are obfuscated): Windows IP ...
4
votes
1answer
5k views

DHCPv6 server + client on Linux

Which IPv6 capable DHCP server and client is best to use on Ubuntu? I can't find a good HOWTO. ISC DHCP?
4
votes
2answers
7k views

Possible to Use IPv4 and IPv6 at the same time?

Can IPv6 and IPv4 work simultaneously?
4
votes
2answers
4k views

How to connect 2 PC by IPV6 in a LAN?

I have two PC, A and B, connected by a switch. I installed ipv6 on both of them. Autoconfigure give them 2 IPV6 address: A preferred link-local fe80::21e:4fff:fec4:50f7, life infinite B ...
4
votes
3answers
2k views

How to get the IPV6 IP address of Linux machine?

I want to get IPV6 address on my linux box. I know one command to get the IPV6 address. Command: $ ip addr show dev eth0 | sed -e's/^.*inet6 \([^ ]*\)\/.*$/\1/;t;d' Output: ...
4
votes
1answer
577 views

What protocol is Window's v6v4tunnel implementing?

Microsoft Windows allows the creation of an "IPv6-in-IPv4 point-to-point tunnel": >netsh interface ipv6 add v6v4tunnel "My Tunnel" 192.168.1.13 209.51.181.2 My question is: what protocol is ...
4
votes
2answers
4k views

How to get dynamic dns entry for ipv6-only host?

The host is behind NAT and uses Teredo to get globally routable. How to make it easily-reachable? For IPv4 case we just use no-ip or dyndns, however for ipv6 I don't see AAAA replies from dyndns's ...
4
votes
1answer
94 views

How can I manually generate a new temporary ipv6 address by generating a new host identifier on Windows/Linux

Right now I am playing a bit with IPv6. Is there any way how I can manually force Windows/Linux to generate a new host identifier instead of waiting for Windows/Linux to do it on it's on schedule ...
4
votes
1answer
180 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 ...
4
votes
1answer
6k views

How to use IPsec?

IPsec is a protocol suite built on top of IP. Originally designed with IPv6, it also exists in IPv4. IPsec enables encrypted communications between hosts at the IP level (that is, upper layers ...
4
votes
1answer
124 views

When will the LIR's run out of the IPv4 addresses? [closed]

"The Asia Pacific Network Information Centre, the RIR responsible for assigning IP addresses to the region, announced the release of its last available batch of IPv4 addresses on 15 April." ...
4
votes
1answer
243 views

How to block a program from using IPv4?

I have a program that can communicate over IPv4 (TCP and UDP) and over IPv6 (TCP and UDP). I want to block the program from being able to use IPv4. I tried the Windows Firewall: Except it blocks ...
4
votes
3answers
3k views

How do I know if a router can handle multiple static IPs?

How do I know if a router can handle multiple static IPs? Is there a protocol or something I should look out for? Also - how important is it that my router can support IPv6?
4
votes
1answer
4k views

How to configure OpenWRT to route IPv6 traffics?

I recently bought a router and flashed OpenWRT, with kmod-ipv6 and radvd installed. I was trying to set up IPv6 connections, but I can only ping ipv6.google.com from the router, not the computers ...
3
votes
4answers
4k views

How do I properly access Google through IPV6?

I'm trying to access Google through IPv6. However, it seems to want to send me back to IPv4! I did a DNS lookup on IPv6.google.com at http://centralops.net/co/ and found their IP, then tried this... ...
3
votes
3answers
176 views

Is an openVPN with ipv6 more secure than PPTP VPN with ipv4?

I have heard that using ipv6 in combination with a PPTP vpn can expose your true ip address, so I have been using a PPTP VPN with ipv4 for the past few months. I am considering switching to an openVPN ...
3
votes
1answer
402 views

Will the removal of NAT (with the use of IPv6) be bad for consumers? [duplicate]

Possible Duplicate: How will IPv6 impact everyday users? (World IPv6 Day) As I understand when we have finally made the switch to IPv6 not only will NAT be unnecessary but it is ...
3
votes
2answers
4k views

Map a Windows network folder using IPv6

I need to map or browse a network folder. I can only use IPv6 in the browser / URL. Is this possible? I am using two Windows 7 machines, one Vista PC, and one Windows Server 2008 R2 machine. The ...
3
votes
2answers
1k views

Can two offices communicate if one uses IPv4 and the other IPv6?

If I get an IPv6 from my ISP for my new office branch, will I be able to communicate with my old branch that is using IPv4?
3
votes
3answers
3k views

IPv6 - Public IPs, private IPs, IPs derived from the MAC address? Confused!

I'm pretty much excited for IPv6 because of the large address room and (potential?) owning of more than one IP, or even tens of IPs (/122 subnet?) Though one magazine has now confused me. In a ...
3
votes
1answer
2k views

IPv6 stateless autoconfiguration + DNS

How do you use radvd on linux/Ubuntu to distribute IPv6 DNS server addresses?
3
votes
1answer
68 views

when describing an IPv6 subnet, what does the /n notation mean, where n = 64, 128, etc.?

I have seen IPv6 subnets described as /64 or /128, particularly by hosting companies. Does a /64 subnet mean there are 64 ipv6 addresses? Or 64bits worth of ipv6 addresses?
3
votes
4answers
3k views

bind-address = ::1 # however, netstat shows 0.0.0.0:3306 LISTENING

I'm running MySQL 5.6 on 64-bit Windows 7 with IPv6 and IPv4 enabled. In my.ini: port=3306 bind-address = ::1 I was hoping to use IPv6 and restrict to the loop-back adapter. I used ::1 instead ...
3
votes
1answer
518 views

How do you view ipv6 websites through browser?

When I had Apache installed and running, I could type in "127.0.0.1" or the inet address I got from ifconfig, and I would be connected to my server. However, if I type in "http://[::1/128]" in my ...
3
votes
1answer
103 views

Will I be able to register my own IPv6 address as an individual?

I know that at this moment, for all practical terms it is almost impossible to register a small portion of IPv4 addresses as an individual or even a small scale corporation. My question is if the ...
3
votes
1answer
193 views

Understanding the black magic of IPv6 addresses

my router (AVM Fritz Box) is supporting 6to4. So far it works but I want to understand what's going on. The last few hours I spent on a IPv6 book. There are many things I understand now but there is ...
3
votes
1answer
8k views

disabling ipv6 on windows 7 64bit

not sure what i am missing here.. every website suggests creating this reg key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents as DWORD and setting its ...
3
votes
5answers
5k views

How to check whether my browser is IPv6 enabled?

Is there some way to check if I have access to websites through IPv6?
3
votes
2answers
963 views

Using Raspberry Pi as IPv6 router for network

I've succeeded in setting up IPv6 for my Raspberry Pi with tunnelbroker.net. However, I would like to share the /64 I got amongst the other devices in my network. The router of the network is a Virgin ...
3
votes
1answer
604 views

Windows doesn't respond to IPv6 multicast ping

I'm trying to do a IPv6 multi-cast ping from Linux and I can't get a response from my windows host. ping6 -I eth1 ff02::1 Will find all my Linux and iOS devices but not my Windows hosts. I can find ...
3
votes
2answers
1k views

Why is Windows 7 announcing itself as an IPv6 router?

I have a 6in4 ipv6 connection from a linux box to a broker. I use gogoc to establish the connection to the broker, and radvd to advertise the route to clients on the network. All this appears to ...
3
votes
2answers
2k views

Should I get a router with ipv6 support?

I'm in the process of getting a new gigabit router so I can transfer files faster to and from my Lacie Network Space. I found Asus RT-N56U Wireless N Dual Band Gigabit Router. Its performance is ...
3
votes
1answer
1k views

How to know if your browser is connected to the Ipv4 or Ipv6 address of a website?

Is it possible to know if a browser (Internet Explorer/Google Chrome in Windows 7 SP1) is using the IPv4 or IPv6 address of a website? What I'm looking for is for some kind of visual feedback without ...
3
votes
1answer
740 views

How to use ipv6 with Vagrant and VirtualBox?

I have a Vagrant setup running Ubuntu in VirtualBox. I'm trying to create a public virtual network interface that I can access from the host. I have had no problem doing this with ipv4. Using ipv6 I ...
3
votes
1answer
987 views

SSH over IPv6 got “Permission denied” error

I have a server that I can connect via SSH over IPv4 address. Now I want to SSH over IPv6. I'm sure that my server is assigned with a valid IPv6 address, and I've configured sshd to listen on v6 ...
3
votes
3answers
9k views

Why has ping started to resolve hostnames to IPv6 addresses?

Why would my computer (Vista Business) begin to start pinging using IPv6? I have not to my knowledge made any change to enable this. When I ping a local computer with it's hostname, ping has started ...
3
votes
2answers
3k views

Too many Tunnel Adapter Interfaces

If I open a command prompt on my machine and type ipconfig /all, I see lots of Tunnel adapter Local Area Connection* 9: Media state . . . . . . . . . . . . . : Media disconnected ...
3
votes
1answer
2k views

Trouble connecting a Ubuntu system to IPv6 tunnel over NAT

I'm trying to set up an IPv6 tunnel, via Hurricane Electric's tunnel-broker service. I've configured my system using their example commands: # $ipv4a = tunnel server's IPv4 IP # $ipv4b = user's IPv4 ...
3
votes
2answers
78 views

Packets not received when running IPv6 through a bridge

I have a setup with two network interface: eth0 and tap0, bridged by br0 bridge name bridge id STP enabled interfaces br0 8000.************ no ...
3
votes
2answers
2k views

IPHLPSVC High CPU in Windows 8 x64

I was experiencing consistent high CPU usage in Windows 8 Pro x64. The cause was svchost running at a constant 25% CPU, even at idle. I checked the services that the svchost was running, and toggled ...
3
votes
1answer
283 views

Can I prioritize IPv6 traffic over IPv4 traffic on Linux?

Is there a way I can give traffic over IPv6 a higher priority than traffic over IPv4? Purpose is 2-fold: Promote IPv6, and be able to connect even when my server is swamped by IPv4 users.
3
votes
1answer
552 views

ignore ipv6 router advertisements for static addresses with bonded interfaces

I need to attribute static IPv6 addresses (not use autoconfigured addresses, and ignore router advertisements). This can be done as follows for a standard interface like eth0 iface eth0 inet6 static ...
3
votes
0answers
688 views

Is there a way to enable/disable IPv6 without restarting Chrome?

chrome://net-internals/dns#dns has a button which allows us to enable IPv6 for Host resolver: This is how it looks like after clicking Enable IPv6: How do I revert to the previous state without ...
2
votes
3answers
3k views

Which Linux-based firewall supports IPv6?

Out of the box neither IPCop nor ipfire support IPv6, not even on the green interface (internal LAN). How do I add IPv6 support to one of them? If that's not possible, is there a linux-based embedded ...
2
votes
3answers
792 views

IPv6 and IPSec - why do I need an external daemon?

I read that IPSec is mandatory for IPv6 implementations. Does this mean that it should be handled by the OS and that IPSec configuration should be mandatory for IPv6 to work? If so, why is this not ...
2
votes
3answers
434 views

MacBook Pro wants to connect to IPv6 addresses for some strange reason

A very weird behavior on a MBP. It seems that some websites are now advertising Ipv6 addresses (e.g., www.doodle.com, addons.mozilla.org, etc.). For some reason, even though I only have an Ipv4 ...