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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1answer
111 views

Linux netstat shows ipv4 mapped ipv6 address

Even after disabling ipv6 on my linux machine and restarting network services, and not having an ipv6 address assigned to an interface, one of my daemon (cassandra to be specific)is using an ipv4 ...
20
votes
10answers
170k views

Why do I get “General Failure” when pinging host name on a Win 7 node on the network?

This is a very peculiar problem with a station on our network. The client pc is running Windows 7 Pro. What makes this problem interesting is that this client is the only node on the network that ...
24
votes
3answers
53k views

how to ssh to a ipv6 ubuntu in a LAN?

I'm able to ping my Ubuntu box via command: (where c2h2ttt is listed in /etc/hosts) c2h2@c2h2crawler:~/ttt$ ping6 -I eth1 c2h2ttt PING c2h2ttt(c2h2ttt) from fe80::21b:21ff:fe22:e865 eth1: 56 data ...
20
votes
2answers
3k views

Can a domain name have both IP addresses (IPv6 and IPv4)?

Can a domain name (example.com) have both the IP addresses, IPv6 and IPv4? Which IP address does a domain name have? IPv6 or IPv4? But I am not sure that it has both or any one at a time.
0
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0answers
14 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 ...
1
vote
1answer
17 views

“awk” not working when using it with “watch”

In order to watch my IPv6 traffic totals I want to run this command: netstat -s -6 | grep -i octet | grep -vi cast | awk '{ print $2/(1024*1024*1024) }' combined with "watch -n1", so it gets run ...
0
votes
2answers
270 views

long delay during ssh login

When I connect to my Debian server via ssh, the ssh client tries to establish a IPv6 connection. This fails after a long timeout (~30sec), then falls back to IPv4, which then succeeds, and I'm ...
-1
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1answer
48 views

Windows resolving hostnames thru IPv6 ULA

I'm running Windows 8.1 and it's trying to resolve hostnames through a IPv6 ULA. Have a look at ipconfig /all: Windows IP Configuration Host Name . . . . . . . . . . . . : rivercardiff Primary ...
0
votes
1answer
38 views

Using IPv6 with Firefox on Windows 7

I have an intranet portal on which I've just enabled the IPv6 interface, and I'm trying to test it. (I can't disable the IPv4 interface yet.) On a test client machine running Firefox on Windows 7, ...
1
vote
2answers
134 views

Can two different services on the same machine use the same port on IPv4 and IPv6?

Say I have two TCP services A and B. A is an IPv4-only service listening on 127.0.0.1:10000. B is an IPv6-only service listening on ::1:10000. Can I start these services on the same machine? That is, ...
1
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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 ...
1
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2answers
217 views

NAT in local IPv4 to extern IPv6

I have a cable router with an outgoing IPv6 address. In my lan I have IPv4 addresses. I want to access to my local server from internet. I am not familiar with IPv6, is there something like NAT? ...
0
votes
0answers
115 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 ...
25
votes
4answers
4k views

Why does the “Internet of Things” enforce the need for IPv6 addresses?

If you have multiple devices in one network, the amount of IPv4 addresses will not increase linearly to accomodate the number of devices. There is just one IPv4 address per Network/Router that is ...
4
votes
2answers
233 views

Accessing an IPv6 server with an IPv4 address?

I have a server (Mac OS X 10.11) machine at home which exposes various services via web interfaces. I would like to access these from outside my own network. My ISP does not provide IPv4 addresses and ...
8
votes
1answer
91 views

How do I specify an IPv6 address in the X Window DISPLAY variable?

I'm trying to export a DISPLAY variable containing a numeric IPv6 address. What format would the variable take, since IPv6 addresses contain :, which normally is used for the display number? Googling ...
0
votes
1answer
49 views

Router is inaccessible, inexplicably giving IPv6 gateway

So I've been using this Router/Modem from my cable company for about a year now. I accidentally unplugged it earlier today, and now while I can access the Internet through a wired connection, my Wi-Fi ...
0
votes
0answers
19 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. ...
0
votes
0answers
76 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 ...
15
votes
4answers
28k views

Is there a way to disable IPv6 in Google's Chrome?

I'm developing websites in a Windows 7 machine. When I've installed Firefox I've found some performance issue specially on connecting to the localhost, googling around I've discovered that it's ...
0
votes
0answers
37 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 ...
0
votes
0answers
18 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 ...
0
votes
2answers
221 views

Why do some DNS addresses don't resolve if I set my network as IPv6 only?

I'm experimenting with moving my home network to IPv6 only. My first try was turning off the IPv4 WAN interface of my OpenWRT box. When I did that, Google continued to work and by that I concluded ...
0
votes
1answer
89 views

My ISP gives me an IPv6 Address Range over DHCP, pfSense won't hand it out to the rest of my network

My ISP gives me a DHCP IPv6 Address /56 range. I have a friend with the exact same setup as me, and his client PC's/devices all get automatically handed IPv6 addresses. How it's setup: pfSense WAN ...
46
votes
7answers
69k views

Is there any benefit to using IPv6 on my home network?

I know that IPv6 is the future because there is only 4 billion IPv4 address, but on a home network, you are not going to have 4 billion users. So are there any other benefits that would make IPv6 on a ...
0
votes
1answer
99 views

How to set up NAT46 on Linux router?

I have a internet connection supporting IPv6 only. But some of my devices (like an AV-receiver) are only capable of IPv4. ______________ | Linux router | ...
1
vote
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 ...
0
votes
1answer
114 views

Access IPv6 home server remotely (also from IPv4 networks)

I have an ISP that uses IPv6 and I want to set up a home server running windows server 2012 essentials and access it remotely using the remote web access feature. is this feature capable of IPv6? and ...
1
vote
2answers
83 views

How can I purchase an IPV6 address? [closed]

Is is now possible to purchase either a single IPV6 address or blocks of them considering how many there are available? I've come across a few questions on here but most of them from what I can see ...
4
votes
1answer
6k 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 ...
0
votes
1answer
359 views

Streaming multicast on VLC over ipv6

We are trying to send a multicast video stream using VLC 2.2.1 on ipv6 protocol between two computers - server and receiver. Both computers are connected via Ethernet cable from one network card to ...
0
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0answers
51 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 ...
3
votes
4answers
143 views

Is there a way to always use the same Teredo IPv6 address?

One of my computers is on an IPv4-only ISP so I am using miredo in order to have an IPv6 address. Now I need to access this computer remotely with IPv6. (I can't use IPv4 here because it is behind a ...
1
vote
1answer
76 views

Limited Connection in Windows 10

I get limited connection most times when my WiFi is connected. I have good signal reception but the connection goes as limited every now and then. Even when the connection is not limited, the internet ...
1
vote
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 ...
1
vote
2answers
729 views

How to whitelist an IPv6 address in VPC security groups on AWS?

I cannot enter an IPv6 address in the inbound rules in AWS VPC security group settings. It says The source must be a valid CIDR (e.g. 0.0.0.0/0) or the ID of another security group and It wont let ...
4
votes
3answers
556 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 ...
1
vote
1answer
56 views

Teredo not working - why?

I'm experimenting with network protocols a little bit and want to connect an IPv6 host from my IPv4-only internet connection using Teredo. The computer is behind a NAT. I tried different Teredo ...
1
vote
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.
0
votes
1answer
34 views

Can't reach webserver from own ipv6 subnet but from outside

I am really confused with my actual ipv6 setup in my home LAN. From my ISP I get an ipv6 /54 prefix. That prefix is assigned to the WAN interface of my router via DHCPv6 provided by the ISP. Then the ...
0
votes
1answer
229 views

Access IPv6 server via IPv4 tunnel?

I am an installer for an ISP here in Alberta Canada. They recently launched LTE but are doing double NAT on IPv4 so accessing a server from the outside world isn't possible via IPv4. They do however ...
32
votes
2answers
3k views

Why is ARP replaced by NDP in IPv6?

ARP was replaced by the NDP (Neighbour Discovery Protocol). But I don't know the exact reason for this. Are there any security issues in ARP? Why ARP is replaced by NDP? What are the advantages of ...
0
votes
0answers
182 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: ...
0
votes
1answer
91 views

Migrate home network to (firewalled) IPv6

Home scenario: DOCSIS EPC3208G in true Dual Stack mode going to a RouterBoard, which then goes to a switch. The switch, and therefore the intranet, lives in another subnet as the EPC3208G. The ...
1
vote
1answer
64 views

IPv6 global address lost after delay

I have a (gentoo linux) computer behind a home router (Fritz!Box 7360). When I initially connect it via a wired connection, it is assigned a link-local address (fe80:...), a unique local address ...
1
vote
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 ...
0
votes
0answers
19 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 ...
0
votes
0answers
151 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 ...
1
vote
1answer
645 views

Not able to ping to IPV6 address from Windows 7 [duplicate]

Mine is Windows 7 both on laptop(home) and PC(office). I've also tested checked this from a school on Win8 PC . Why I can't ping any IPV6 address? I've disabled Eset nod32 completely but still: ...
0
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0answers
81 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 ...