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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Setting up ipv6/dhcp with duid

I've got an online.net dedicated server which runs fedora 22, KVM and a few other things, so I currently have it setup with a bridged network connection. My provider has given me a duid, and I'm ...
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1answer
5k 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 ...
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1answer
104 views

Windows Update doesn't work and consumes 100% of CPU (Win7 SP1)

I've created this question since I don't have enough reputation to answer others like that: svchost.exe high memory usage - wuauserv. Actually I've registered here mainly to share my experience about ...
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38 views

Correct way to set up Windows Server 2012 R2 ESSENTIALS? [on hold]

Here's my basic setup: Windows Server 2012 R2 ESSENTIALS. Lenovo TS440 Server. Comcast Router/WIFI/Modem Cisco DCP3939B (Business) NO COMCAST STATIC EXTERNAL IP. TrendNet TEG S80g 8 port switch. A ...
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1answer
44 views

Can I allocate IPv6 addresses to directories of my web server?

I am running an apache server on a Debian machine and I have 1 IPv4 addresses and 20 IPv6 addresses. I want to run two websites of this server, can I allocate a directory an IPv6 address so that I can ...
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1answer
39 views

Ubuntu can't connect to IPv4 sites, and some very odd network behavior

I'm on Ubuntu 15.04 with Chrome up to date. I've been having a strange problem recently. My internet connection is wireless broadcasted from DSL (AT&T U-Verse to be exact). Viewed with ifconfig, ...
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1answer
53 views

Some sites does not work with IPv6

I have a IPv6 problem. I'm running native dual-stack IPv4/IPv6 and most sites works just fine over IPv6, but some sites won't load. Any idea what can cause this? I have tried to reduce the MTU, but ...
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36 views

How to configure Windows XP/windows 7 to support icmpv6 redirection?

  I construct an icmpv6 redirection packet. When I send it to Linux, it works well. Then I modify its destination ip and mac address and send it to the corresponding windows XP/7 system, but windows ...
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1answer
55 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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29 views

How do I change my IPV6 address?

I am trying to avoid a twitch perma IP ban by changing my IPV6 address, I am under Videotron Ltee, windows 8, using a Lynksys Cisco router and an Aris modem. For now I was using a VPN but it seems to ...
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41 views

How do I change my IPV6 adress and protect myself from DDOS attack?

So recently I accepted a random person on skype, this person started DDOS'ing me (atleast I think this is what itis) the person told me he was gonna DDOS me. The first thing I did was removing him, ...
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2answers
275 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. ...
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1answer
147 views

IPSet with IP6Tables ERROR

Can someone please solve my headache and tell me how to fix this? [root@www ~]# ip6tables -I INPUT -m set --match-set blacklist6 src -J DROP ip6tables v1.4.7: Couldn't load match ...
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2answers
117 views

Firefox sporadically loses ability to perform DNS lookups

I've scoured the web for several days now, essentially every single time I encounter this. I hope someone here knows a solution to this. Facts I'm using the latest stable release of Firefox at the ...
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1answer
466 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) ...
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23 views

server behind vps, ipv6 to ipv4

i have a server, vps and few clients that connects directly to server, but now i want them to connect through vps. server is visible only by ipv4, and vps accepts only ipv6, i will change clients so ...
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3answers
7k views

Accessing IPv6 addresses through an SSH tunnel

I have a remote Arch Linux server which has IPv6 enabled (through Tunnelbroker, I am able to do ping6 ipv6.google.com successfully) and I want to know if it's possible to use PuTTY on my Windows 7 ...
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0answers
32 views

ipv4tov6 address translation in windows7

I have a windows7 PC connected to a IPv6 network. On the PC I have an application that needs to communicate with another IPv6 machine. The application can only be configured with an IPv4 address. Is ...
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0answers
25 views

ipv6 routing between 2 subnets not working

I'm trying to configure ipv6 routing between machines in the different subnets. Between the machines already configured and works ipv4. I have 2 ipv4 subnets with addresses: 10.0.1.xxx 10.0.2.xxx ...
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0answers
36 views

TCPDUMP Network IPv6 Packets

I am new to tcpdump tool and I am working in the analysis of network packets, I have analysed the IPv4 Ip packtes generated in case of wifi. But Now I am running my android phone in sim's 3g network ...
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1answer
3k 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 ...
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0answers
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I cannot capture DHCPv6 packets on GNS3 using Wireshark

I have got a router set up as a DHCPv6 server connected to a host that gets an IPv4 & IPv6 addresses from it, however I am not able to capture any DHCPv6 packets at any point of the connection. ...
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3answers
478 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 ...
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0answers
19 views

Ubuntu server as DHCP server for dual stack

I currently have an Ubuntu server on VirtualBox set up to give hosts on my GNS3 topology IPv4 addresses, and it is working without issues. However, I would like to have that same DHCP server give out ...
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1answer
12 views

Contiki OS Rime + IPv6

I have a network of sensors which run the RIME protocol with custom muli-hop connections. I intend to connect this network to an outside network (IPv6). But my question is that whether RIME and IPv6 ...
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1answer
1k views

Why would my router have different MAC addresses for IP and IPv6 transactions?

Today I was using tcpdump and I noticed my computer was having IPv6 traffic with a particular MAC address that I could not match with an IP using nmap or arping. After looking at the tcpdump logs a ...
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1answer
68 views

How to enable IPv6 on Mac?

I'm using Yosemite 10.10.3 Wi-Fi BUFFALO Going to [http://test-ipv6.com/][1] shows me that "No IPv6 address detected" Right now its on "Automatically" If I change it to "Manual" - what should ...
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0answers
22 views

Installing an IPv6 subnet to my home network

When I call my ISP and ask for an IPv6 subnet which the default is a /64, correct? I have the ability to then assign an IPv6 address or more to each one of my servers, which is 20 in total, and they ...
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0answers
14 views

Output of the Show ipv6 dhcp interface

I successfully configured the DHCPv6 server. My CPE is also receiving the prefixes. However, I am not to figure out some of the terms(which are in BOLD) in the output of the command "show ipv6 dhcp ...
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2answers
18k views

Pinging own machine returns an IPv6 address instead of IPv4

When I ping my own machine I get an IPv6 address: Reply from fe80::1004:p8f0:9e40:a42c%10: time<1ms Reply from fe80::1004:p8f0:9e40:a42c%10: time<1ms I used to get the IPv4 address (eg. ...
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1answer
27 views

Ipv4 properties tab greyed out

I am facing this problem of IPv4 and IPv6 properties tabs greyed out and not able to change the settings of the same. I have tried many solutions given online such as netsh commands and antivirus and ...
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2answers
360 views

Configuring a static IPv6 address that inherits delegated prefix

My ISP (comcast) delegates a prefix, my router is passing along the prefix delegation (pd) onto the LAN. My Debian machine is getting the prefix and appending using EUI-64 address. That's nice but not ...
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3answers
2k views

Dynamic DNS for both IPv4 and IPv6 (using freedns.afraid.org or others)

[Edit: I have now found a solution; see below for my answer] I want to set up dynamic DNS on my Fritz!Box 7490, so that it is reachable both on IPv4 and IPv6. Note that I want to reach the Fritz!Box ...
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1answer
57 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

Android dhcp assigning bogus dns server

I've been having problems with Android devices and DNS lookups on my WiFi network, so I've done some digging and found that android is assigning what appears to be a random link-local ipv6 address in ...
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1answer
484 views

How do I get Tomato to use IPv6

My ISP provides native IPv6 and it works great when I connect directly with my macbook to the ethernet port. I get a ipv6 assigned and all IPv6-only sites works great. But when connecting through my ...
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39 views

ip6tables with K26 std-nokaid-small firmware for my WNR2000 version 1 router?

I am looking at the K26 std-nokaid-small firmware for my WNR2000 (v1) router. It is supposed to support IPv6, but is ip6tables (or other IPv6 compatible firewall) included in the image? ...
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0answers
85 views

DD-WRT and native IPv6

There have been a couple of questions on this topic but as things have evolved somewhat since then, so I'm opening a new thread. My ISP has started offering native IPv6 and I'm trying to get DD-WRT ...
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2answers
156 views

What is the IPv6 equivalent of 192.168.xxx.xxx? [duplicate]

I have a server which responds differently to requests from the general internet as opposed to the intranet. For IPv4 I can simply check if the address begins with 192.168. This works for my needs. ...
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1answer
490 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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7answers
46k views

Is IPv6 'faster' than IPv4?

Are there any practical speed/latency gains from using IPv6, or is it just to make more room in the wild wild web?
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0answers
49 views

Enabled IPv6 Nic causes network connectivity issues

I am having issues with network connectivity while PC NIC's have IPv6 enabled. My organization does not utilize IPv6. Actually, the network admins here don't have any clue how to. I have come to the ...
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1answer
50 views

How to autoconfigure IPv6 route

I configured a simple router that should provide IPv6 connectivity to machines that are on LAN behind it. The router has 2 network interfaces (eth0, eth1), machines have 1 (eth0). On router's eth0 is ...
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2answers
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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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1answer
49 views

How to get IPv6 of a website?

How can I get the IPv6 address of any website ( eg www.google.com) using ping command in cmd on windows 8.1? And is it possible to do so if my OS only supports link-local IPv6? I tried this: ping -6 ...
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1answer
22 views

port forward in INPUT level

I want to change the destination port of the ipv6 packet in the INPUT level. So I tried to use ip6tables with nat in the INPUT level but seems this command does not work # ip6tables -t nat -I INPUT ...
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1answer
31 views

IPv6 inverse neighbor discovery doesn't work

I read RFC 3122 which is about IPv6 Inverse Neighbor Discovery. And I want to test it. So I construct an IND Solicitation packet and send it to Debian 7.2. However I never receive an IND reply. My mac ...
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1answer
360 views

Disable ipv6 in Opera? (windows)

How can i disable ipv6 in Opera? Windows version. Disabling ipv6 in Windows or using other browser are not acceptable options.
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4answers
554 views

Can't access my computer with its public ip

I installed MAMP on my Macbook Pro. It opens on 'localhost:8888'. I went to http://www.whatismyip.com/ and it gave me my ipv4 address. I copied my ip and put it on my browser like this: myip:8888 and ...
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1answer
70 views

How can I add some static IP address at IPv6 for Windows 2012 DHCP server?

I would like to add some static IP address to my Windows 2012 DHCP server. I have tried to pair the IP address with its MAC address. At IPv4 it works, but how can do it at IPv6? Could anybody link a ...