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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Should I really add `127.0.0.1` to proxy WPAD autoconfig?

Recently I met a strange problem with Java applications were not able to connect to itself. After digging I found, that the root cause was that opening the URL of http://127.0.0.1 was leading to the ...
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985 views

Unable to connect to WiFi via NetworkManager sometimes(!)

I have an issue which occurs only in Arch + Xfce + NetworkManager. It doesn't occur in Arch + Gnome + NetworkManager or in Ubuntu or Arch + Xfce + wicd on my machine if I'm not missing something. ...
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54 views

ssh_exchange_identification: connection closed by remote host - not caused by public keys or DNS

I have been using this ssh-setup for months, but yesterday it stopped working for whatever reason. It would be great if any of you had an idea how to fix it. Setup: MyComputer(Ubuntu) > Machine1 > ...
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27 views

can connect to ipv6 access point, but not communicate with devices

I am attempting to run a local ipv6 network and have gone through a number of tutorials, but with limited success. I'm running a server on the router/access point and it is the only device I need to ...
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10 views

Limit Windows router advertisement/forwarding to VirtualBox

I enabled IPv6-networking via IPv6-tunnel from Hurricane Electric. The tunnel endpoint is a Windows 10 machine with a public static IPv4 (no NAT! public routable IPv4! No DHCPv4!). I am running a ...
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10 views

Does linux support the update of IPv6 NUD state machine ?

I am studying the rules of IPv6 Neighbor Unreachability Detection. And rfc7048 updates the state machine of NUD. However, I found most of linux releases do not support this update. I want to find ...
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19 views

OpenWrt DHCPv6 relay bad results for ping

Device: NETGEAR wndr3700v4 OpenWrt Ver: 15.05 Chaos Calmer After setting up DHCPv6 relay with instructions in Wiki, I can get IPv6 address on my laptop and dig can return IPv6 DNS. ping6 ipv6....
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59 views

Windows 10 - Homegroup Problems

Just upgraded to Windows 10 and trying to setup a home file sharing network. When I go through the process, I get a message that I must have IPv6 enabled. I'm instructed to run HomeGroup ...
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31 views

IPv6 SLAAC address being added to interface when it shouldn't

I have built a Linux based router for a network testing environment. The machine has 4 physical ethernet ports wan lan0 lan1 lan2 All 3 lan* interfaces are bridged on my lan device. I am running ...
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32 views

Android phone issue with internet connection via WLAN shared by virtual wifi from my laptop

I try to share my internet connection from my laptop (win7) via virtual wifi to my android phone (Samsung Gio). In an elevated cmd I enter netsh wlan set hostednetwork mode=allow ssid=VWiFi key=xxx ...
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56 views

Slow ipv6 transfer speed with an ubuntu laptop

ipv6 transfer speeds on my laptop running Kubuntu 15.10 are really slow : less than 1Mb/s whereas it is more than 10 times faster with ipv4. It occurs both with wifi or wired connection. I've tried ...
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20 views

How does Linux handle reachabletime variable of RA message in IPv6 neighbour Discovery Protocol?

I send a IPv6 RA message whose reachabletime is 5s and an echo request to a linux system like CentOS6.5/Ubuntu12.04. Then I send a NA message upon receiving the NS message linux sending. After ...
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77 views

How do I make my dd-wrt router obtain a WAN IPv6?

My ISP, Andrew & Arnold, provides IPv6 natively. I'm using dd-wrt in my router. How do I make it obtain the WAN IPv6 and distribute it to computers in my network?
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36 views

Hyper-V private/internal network providing ipv4 address

I have Ubuntu 15 running under Hyper-V. When I use external network then the VM is assigned with an ipv4. When I switch to internal or private network, the VM is assigned with an ipv6 instead. A side ...
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80 views

IPv4 or IPv6 for local DNS server?

I am a bit inexperiencied with networks. I have set up and dns server in a virtual machine on Debian 8 using dnsmasq. To test if it was working, I gave it only one record: www.facebook.com with ...
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176 views

Unable to run apt-get install at kali linux

I was trying to update my kali2.0 machine through apt-get update,I properly configured sources.list as per kali linux repositories I checked my Internet connection and its working fine,myself ...
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16 views

IRC connect time on IPv6 using linux

I am in need of some help. When I connect to IRC servers by IPv6 it has taken upwards of 6 minutes to connect. But when i use v4 it takes seconds. This happens on all irc servers that I have tested ...
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540 views

Force Squid to connect to sites over IPv4 rather than IPv6

Is there any feasible way to force a select amount of domains to use IPv4 connectivity rather than IPv6 with Squid, whether its via acl other another method? I'm aware of the dns_v4_first config ...
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31 views

NAT64 using Tayga

I have successfully configured Tayga to facilitate NAT64. I gave a dynamic pool as 10.0.64.0/24. Currently, I have 2 IPV6 hosts configured and trying to ping an IPV4 host through the NAT64 server. Now,...
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122 views

Windows 7 not request/response multicast FF02::1

I have write a simple UDP client & server code to test multicast address via IPv6. But I found an interesting thing, that I can't send messages to FF02::1 (same when I ping it). I have used ...
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24 views

IPv6: Router Advertisement only works for 8 seconds

(I already asked this in the IPFire forum but didn't get an answer) I have setup a native IPv6 connection using a bridge as documented in http://wiki.ipfire.org/en/add-ipv6/ipv6/extended. IP ...
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42 views

IPV6 end-to-end data connection not working

I am configuring for IPV6 end-to-end connection. I can get proper IPV6 address on my wan interface and br-lan interface, but I cannot browse on the IPV6 only network. I can ping the DNS server, but ...
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61 views

Windows 8.1 How to make IPv6 take precedence?

Two machines: comp1 with Windows 8.1, comp2 with Windows 7. The network in the building routes IPv6. How can I make my comp1 default to IPv6 routing the same way comp2 does? On comp2 when I run ping ...
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497 views

Just upgraded to HughesNet Gen4. Have IPv6 access but not IPv4 access on my wired network.

We just upgraded to HughesNet Gen 4. Now our wired network only works partially. We can access wireless (which runs through our wired switch). The Wired network says IPv4: No Internet Access. IPv6: ...
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27 views

Enforce EUI-64 configuration

I'd like to ask if there is any possibility to enforce EUI-64 address in my network. I'm not able to use port ACL and IPv6 Source Guard because of old IOS system on my switches and the upgrade ...
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246 views

IPv6 for homegroup

In Windows 10, the ethernet properties show IPv6 is installed. Homegroup creation fails because IPv6 must be installed. The error message tells me to run the homegroup troubleshooter to install IPv6 ...
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110 views

Both Xbox One and PlayStation 4 wants to listen on ports 80 and 443?

This is really a question about poor documentation more than anything. It seems both the Xbox One and PlayStation 4 wants to listen 80 and 443. As I’m in a household with a webserver listening ...
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175 views

windows 7 prefer ipv4 over ipv6

I have ATT Uverse for my internet. A few months ago we had problems and they installed a new router. All of a sudden google and facebook are using ipv6 and are getting horrible performance, they ...
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70 views

Unable to Use IPv6 Tools from Command Line (OS X Yosemite)

ssh, ping6, traceroute6, etc. all hang when I'm trying to access a host via IPv6. My machine is configured for IPv6 as far as I can tell (via sites like http://ipv6-test.com, etc.) I'm not sure ...
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68 views

Configure a fixed IPv6 gateway which has a changing IPv6 address?

Short version, possibility of XY problem: I have to configure a static IPv6 gateway on my computer. The gateway's IPv6 prefix changes once a day. How do I do that? Long version with all details: I ...
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73 views

Computer constantly losing internet connection Norton Scan says IP address disappears

One of my computers is constantly losing it's ip address and going offline and showing the yellow triangle over the little computer network icon. I am using a router for three computers and two I ...
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45 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 XP/...
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95 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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49 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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53 views

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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119 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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26 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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446 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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107 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? dd-wrt.v24-...
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283 views

Disabling IPv6 DNS resolution on client only to a specific domain

I have a Windows 8.1 machine, from which I want to connect to my company's extranet. However, I can't connect to it from my domain-joined laptop when it's at home, though I can from a work, or a non-...
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998 views

How can I prevent Cisco Anyconnect, client-side, from setting any IPv6 routes?

On the client side, how can I prevent Cisco Anyconnect from setting IPv6 routes. I'm admin on the client-side, so this shouldn't be a limiting factor. Currently upon connection routes get set for ...
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144 views

ip6 on a wrt54g Via Charter

I was told you guys might be a better site to ask this question. Im looking to play around with ipv6 and would like to get my router (wrt54gv3.1) working. My ISP(charter) offers a 6rd relay to use. ...
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286 views

Assigning Static IPv6 address to Ubuntu VM in Vmware

I'm trying to assign a static ipv6 address to a ubuntu vm running on VMWare. At the moment, I've got a single network adapter, a NAT. /etc/network/interfaces is configured like this (following this ...
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258 views

Make socat listen on both IPv4 and IPv6 stacks

Switched providers the other day, they only assign DSlite-connections. I'm fine, I thought. Thing is - I want to access some of my stuff from outside of my network, which should be of much less a ...
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54 views

unable to connect ubuntu ipv6 host to cisco router

Currently I've been working to set up an IPv6 LAN network with ubuntu hosts and routers. Here's my current configuration: iface eth0 inet6 static address 2001:ac10:101::2 netmask 64 ...
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77 views

I am getting different internet speeds on different computers with the same settings

I have two Crunchbang machines with identical /etc/sysctl.conf and /etc/default/grub files. On both of the sysctl.conf files I have ipv6 disabled, and the grub files are at their defaults. However, I ...
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113 views

Visiting a webserver behind a NAT that has a IPv6 ICP IP address

I set up a webserver behind my xfinity WiFi router/modem. Behind the router, I have 10.0.0.X addresses. My public ISP IP address is an IPv6 address. When I login to the router/modem and set up port ...
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67 views

How to connect a local network to IPv6 site / net?

I want to connect my home network (IPv4 only conection to internet) to my server (IPv4/IPv6), what is the best way to do this? Current setup: Home network ("HOMENETWORK") with Linux (Ubuntu 14.04) ...
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240 views

Ping Global IPv6 address on Ubuntu VM

My setup is like this: Host: Windows 8 with Virtualbox VM: Ubuntu 14.04 with 2 network adapters, eth0 a Host-only Adapter and eth1 a bridged adapter connected to my Wireless. From my host to my VM I ...
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77 views

Globally Unique IPv6 Address on a VM running ubuntu

For testing purposes, I'd like to be able to deploy VM's running Ubuntu that have globally unique IPv6 addresses. The VM software is Virtualbox. I am able to make link local addresses (as said by ...