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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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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531 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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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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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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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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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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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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How can I use curl with ::1 for ipv6 based loopback?

I tried a few ways but they seem to be confusing curl. root@testt:~# curl localhost:8080 <h1>Hello world!</h1> <p>Boom Bam Splat</p> root@testt:~# curl ::1:8080 curl: (3) ...
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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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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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901 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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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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What is the difference between IPv4 and IPv6 in terms of binary?

I know this question is for entry level users. That I am. New to this world and finding it very interesting. I have done some research on IPv4 and how to convert IP addresses to binary and vice versa. ...
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188 views

VPN from IPv4 only to IPv6 only

I want to access my home network on the go, but it can only be reached via IPv6 from outside. The network(s) I want to reach it from usually only have IPv4. (How) Can I access the whole home network ...
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190 views

Why doesn't curl work using an IPv6 connection?

How come a: curl -v -6 http://badurl.com doesn't work but a: curl -v -6 --head http://badurl.com Perfectly works? MTU isn't the problem (?) since: root@server:~# ping6 -c 10 -s 2000 -M do ...
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414 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 ...
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820 views

IPv6 tunnel from behind an ISP-level NAT

Previously, at a different location, I set up a Hurricane Electric IPv6 tunnel, which worked fine, allowed me to access IPv6 only sites and test the native IPv6 connections on my remote servers. ...
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How do I access IPV6 from IPV4?

I have been searching for a long time ipv4 to ipv6 proxy program but i nothing found... Currently i have IPv4 address however i would like to try IPv6 address. Is there a simple solution for IPV6 ...
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ifconfig ignores alias on IPv6

When I add an IPv4 address for the interface eth0:0 with ifconfig, it is created correctly: ifconfig eth0:0 add 192.168.10.10 This can be verified by ifconfig or "ip a". When I add an IPv6 address ...
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508 views

linux route command not working

I use route command to add new route in my routing table. But it my new root is not added. Also it doesn't show any error for my command. Here is the console #route add ::/0 via fe::2 route: ...
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808 views

Do all IPv4-compatible IPv6 devices have two IPv6 addresses?

Is it possible for an IPv4-compatible IPv6 device to have only one IPv6 address? For example, when device-A talks to an IPv4 device, device-A communicates using its IPv4 address 2.2.2.4. Later, when ...
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How to port-forward IPv6 in m0n0wall?

How do i port-forward IPv6 packets in m0n0wall? For example i want to forward traffic arriving on port 443 of my router to another IPv6 address: Interface: WAN Protocol: TCP External port range: ...
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455 views

What are the equivalent IPV6 versions of IPV4 special-use adresses?

I'm trying to make a private network with 5 computers bellow an external ADSL router with NAT, but internally I want to use IPV6. To do this I need to use private special-use IPV6 addresses, such as ...
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700 views

How to reach a Global Scope IPv6 host?

I have setup DNS64+NAT64 on a machine with 2 interfaces: eth0: public IPv4 address (connected to outside world) eth1: global scope IPv6 address: 2001::/64 I can successfully use ping6 google.com on ...
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I can't set up the following Netsh settings, because the object is already exist

I use the Netsh int ipv6 show int in terminal, the result: 1 50 4294967295 connected Loopback Pseudo-Interface 1 11 10 1500 connected Local connection When I wanted to use the ...
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Sending too much data over IPv6

I have installed fedora 20 in my laptop, and got a problem that the data traffic, especially the sending part, increased heavily (>10MiB/s), while connecting networks with IPv6. I have tried to use ...
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69 views

Deploying IPv6 across multiple interfaces with one 6in4 tunnel

I've got a 6in4 tunnel from Hurricane Electric at home which gives me IPv6 connectivity one interface, br0. I'd like to offer IPv6 connectivity on a separate interface as well, br1. How do I enable ...
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62 views

IPv6 multicast address for all nodes on network

I've got a basic network with 3 nodes (VM's). One node publishes an event, the other nodes listen for it and print something when received. It used to work one-on-one (so node gives event to each ...
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63 views

Is it possible to setup a private IPv6 subnet and route to the Internet?

I am still trying to figure out how IPv6 works. But I had a question. I currently have an pfSense firewall attached my Comcast service and configured with to request a v4 and v6 WAN address from ...
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64 views

ipv6 route add issue while adding a particular nexthop address

// IPv6 route add issue in kernel for a particular subnet...(1000::)...why? // Adding ipv6 route : sudo /sbin/ip -6 route add 1005:1006:1007:1008::1/64 via 1001:1002:1003:1004::1 dev eth0 RTNETLINK ...
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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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Choose different host part during IPv6 auto configuration

My Internet provider assigns dynamic IPv6 prefixes, which changes every few days. Is it possible to change the host part during auto configuration, e.g. using the prefix from the router ...
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78 views

IPV6 and MAC discovery

Is there a way to get the MAC and IPV6 Global link address for the network, just as ARP does with IPV4 in Ubuntu. I tried to retrieve IPV6(Link Local Address) using THC-IPV6 tool. But retrieving MAC ...
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638 views

radvd is not assigning prefix

I'm currently trying to setup IPv6 address auto-configuration with router advertisement daemon (radvd) on a virtual machine running CentOS 6.5. But the eth0 interface is not obtaining that prefix. ...
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How is IPv6 stateless autoconfiguration supposed to be used?

I've been using IPv6 for many years now, but it wasn't until I switched ISP recently (and with that, from 6to4 to 6rd) that I found out that stateless autoconfiguration only works on /64 subnets. I ...
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71 views

Vanity IPv6 address with SLAAC

I would like to force the second half (the interface identifier) of my link-local and SLAAC-configured global addresses to not be derived from my MAC address or completely random (from privacy ...
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1k views

Internet Connection frequently dropping on Ethernet

My internet connection is frequently dropping on Wired Lan (Ethernet) but the wireless works fine without any problem. It's not an issue of Internet Speed as Internet works fine in Windows. ifconfig ...
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Use sixxs subnet on one machine

I've got a sixxs subnet with aiccu on my debian vps, and want to use the complete subnet at my vps. Currently only the 2001:4dd0:f000:000f::2 is usable. My config: (ip a) 3: sit0: <NOARP> mtu ...
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207 views

Dynamic DNS with Dual-Stack IPv4/IPv6

In the past, I have been providing services (i.e. HTTP, VPN, etc.) on my network via port forwarding. Each service has its own domain name (i.e. home.domain.name, deluge.domain.name, vpn.domain.name, ...
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558 views

NAT with IPv6 (Forced by ISP)

My ISP has recently decided that "high bandwidth clients" are now forced to use IPv6. While I can plug my laptop with Win7 directly into the modem and I have access, connecting routers or my ...
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837 views

OpenVPN 4in6 or 4over6 tunnel

My ISP sucks. It gives me an IPv6 Address and an IPv4 one, but IPv4 is down 50% of the time (I can't access any IPv4 Services every 10 minutes)... As I already have an OpenVPN Server set up, I asked ...
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216 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 ...
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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 ...
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404 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 ...
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417 views

Win 7 IPv6 default Routes

I am using a DHCPv6 server (Dnsmasq) to assign IPv6 address in my LAN. My configuration works, but I am unable to ping the DHCPv6 server. The route information on host machine does not contain a route ...
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Teredo won't enable on domain-joined Windows 7 system

I'm trying to enable Teredo on a Win7 SP1 x64 system, in order to provide Remote Assistance for a system outside the local network. The local system is joined to a 2008-level domain which I have full ...
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253 views

Why do I need a managed switch and which one should I buy?

I bought a 2nd router and I want both routers to have direct WAN access to the modem. One of the 2 routers directs VOIP traffic to a telephone line port. This VOIP service is provided by the cable ...
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701 views

How to configure IPv6 routing from other computers to Teredo client in Linux

My computer (also router) uses Teredo to access and be visible on IPv6. How to assign neighbor IPv6 addresses to other computers for them to be able to be routed to Teredo using the router? What ...
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99 views

What protocols will/are ISPs use for IPv6 deployment?

Currently ISPs deal out addresses via DHCP for IPv4 dynamic (single) addresses. What protocol will/are ISPs going to use for IPv6 when they can hand a customer an entire /64 (or /48 if they are nice) ...
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Why is IPv6 ping failing to access google.com?

I have found that ping google.com from my Windows 7 box has stopped working. Below is the output - note that the IPv4 ping works, and Yahoo works. Is my local router at fault here? ...