Tagged Questions

The length of an IPv6 address is 128 bits, compared to 32 bits in IPv4. Therefore the address space supports 2128 or approximately 3.4×1038 addresses. This means that many more devices can be connected directly to the Internet. A typical IPv6 address would be represented like this: ...

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How to install IPv6 on Windows 2003

How do you install IPv6 on Windows 2003 ... and get it working ? I'm trying to add IPv6 to one of my development machines which is Windows 2003. I've followed the knowledge base article on MSDN, and ...
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2answers
30 views

Can't browse websites using IPv6

I have configured my Windows 7 to use IPv6 (auto IP & OpenDNS IPv6 DNS) / IPv4 disable. Now the problem is that only ipv6.google.com is working but no other website is opening. How do I access ...
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3answers
163 views

How do debug DNS name resolution? (nslookup works, but telnet doesn't)

I'm trying to connect to a website: http://superuser.com.sixxs.org i can ping the address: C:\Users\Ian>ping /6 superuser.com.sixxs.org Pinging ipv6.nginx.sixxs.net [2001:838:2:1::30:67] with ...
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1answer
38 views

How to determine a PC's IP v6 address

How can you determine a PC's IP v6 address ? I have 2 machines, and if I do an ipconfig on one, I get ... Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : lan ...
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3answers
382 views

Does disabling IPv6 decrease my surface area of attack and increase performance?

I have colleague that is on this whole kick of disabling IPv6 while leaving IPv4 on each new machine that comes in before deploying in our environment. He takes his personal anecdotal evidence and ...
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1answer
97 views

Failed to fetch security.debian.org on Windows host

I am using 64-bit Debian 6.0 (squeeze) from a Windows 7 64-bit VirtualBox host, but I'm unable to successfully ping security.debian.org from both the guest or the Windows host. E.g., from the ...
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1answer
28 views

Why does it take so long for Eclipse to connect to a JUnitRunner process when IPv6 is enabled?

When IPv6 is enabled on my computer, half a minute passed between starting a new JUnit process and the test tree appearing in the JUnit view. When I disable IPv6, the tests appear immediately. What ...
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1answer
75 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 ...
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2answers
175 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
135 views

IPv6 source address selection and routing in Linux

I'm in the process of setting an ipv6 on my test network. I work with a /56 network and CentOS 6.2. I have an interface with 2 IPv6 addresses on 2 different networks : 2b0 1:abcd:4001:c00::30/56 ...
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2answers
147 views

IPv6 Address not setting

I am having a problem setting up IPv6 Address on ubuntu 10.04.I have disabled my network-manager. My /etc/network/interface file looks like this: iface eth0 inet6 static pre-up modeprobe ipv6 address ...
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1answer
166 views

Setting Remote Desktop to allows IPv6 connections

Setup: Basically I have 3 machines (2 virtual and 1 physical) that I would like to be able to RDP in to from outside my NAT (a router). The VMs are Windows 7 and Windows XP, both fully patched ...
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1answer
78 views

Could not open IPV6 addr on web browser

I have ipv6 address fe80::21f:a4ff:fe91:2e44%4. This is the address of modem/router. I am unable to open this address in browser to view the web configuration. I am able to telnet to ...
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2answers
174 views

IE9 on Windows 7, ipv6.google.com does not work, but in chrome it does?

I have an ipv6 connection, I get addresses, DNS is working and I can ping (with ping -6) ipv6.google.com. I can get to and use google in Chrome, but it does not work at all in IE9. It just says that ...
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1answer
82 views

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

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 ...
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2answers
136 views

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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231 views

ifcfg-eth* on CentOS 6.x, but for IPv6 only?

Could someone kindly provide a skeleton ifcfg-eth0:[X] for creating an alias with a IPv6 address and no IPv4 address? Or, alternatively, what's the IPv6 equivalent of this: in ...
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3answers
71 views

Since IPv6 has larger addresses than IPv, how will that affect performance?

IPv4 are 32 bit addresses, while IPv6 are 128 bit. It's 4 times larger, sure on a small scale maybe not a big difference, but on a world wide scale will it make a difference? Are their any messures ...
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2answers
172 views

How do client applications know to use IPv4 or IPv6?

How do servers/computers/users/applications know to request a resource over the Internet with an IPv6 address vs. and IPv4 address?
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1answer
377 views

IPV6 auto configuration not working in Ubuntu Natty

In Windows 7, my computer can automatically get a IPV6 global address and use IPV6 network, but in Ubuntu Natty, I can't find out how to let stateless configuration work. My network is a university ...
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4answers
82 views

Are there any home ISPs that offer external IPs for all devices on the network? (No NAT)

NAT is a a real pain, and the large address space in IPv6 doesn't need it. Are there any ISPs that offer actual home routing, giving each computer a global IP address, rather than a local one? This ...
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2answers
103 views

Privacy, VPN and routers

Ever since this ACTA push-up the things are starting to heat up around torrents and privacy. I am using Tribler now, but this is not secure enough for me. Not enough privacy. I've been using in the ...
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1answer
49 views

I can not see ipv4 and http, I can just see ipv6 and SSDP [closed]

I have a real huge problem, when I am connected through the wireless of my university, I can just see adresses like this : 1823731 14856.287768 fe80::74b6:2d79:4343:41e1 ff02::c SSDP ...
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1answer
114 views

dhcp6 server config problems

I'm trying to configure an IPv6 DHCP server in gentoo. So far: /etc/dhcp/dhcpd6.conf - subnet snippet: subnet6 2001:db8:21e:101::/64 { range6 2001:db8:21e:101::6 2001:db8:21e:101::100; ...
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1answer
74 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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3answers
175 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 ...
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votes
1answer
521 views

Back to My Mac registers services using loopback interface IPv6 address

I'd like to be able to use Back to My Mac over the IPv6 internet. I've already got IPv6 access (i.e. My Airport is assigned a /64 block from my ISP and sends out RAs so everyone on the network can ...
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0answers
38 views

Does IPV6 make IPV4 IPs less valuable? [closed]

With IPV4 there was a scarcity of IP addresses, so low supply increased the demand and it was of some value when people owned Class A IP addresses. Now that IPV6 is becoming more and more prominant, ...
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2answers
220 views

Linux/bash: How to get interface's IPv6 address?

What command can I use to get IPv6 address of an interface in a script? Update: Output of sed from one of answers. $ ip -6 addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 inet6 ::1/128 scope ...
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1answer
112 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 ...
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votes
2answers
218 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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1answer
110 views

IPv6 on ASUS WL-520GU or other

It's coming this summer. IPv6!!! This DD-WRT tutorial is information overload for me. I can't tell if this would be supported on my ASUS WL-520GU, and I don't see a clear way to make it a secure ...
0
votes
1answer
120 views

Why does NAT64 require DNS rewriting?

When a IPv6 only host wants to reach a IPv4 only host, why does the DNS server (or possibly the NAT-PT gateway?) have to rewrite the A responses to AAAA? Couldn't IPv6 simply embed the IPv4 address ...
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1answer
190 views

Can't access my shared folder by ipv4, only ipv6 and name

How to make possible to access to shared folder on win7 machine by ipv4? as my linux machine needs it. The problem is in fact that i can't access by ipv4 to this folder even from this win7 computer, ...
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3answers
119 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 ...
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3answers
192 views

Why does IPv6 use 128 bit addressing? [closed]

When I first heard about IPv6, I just assumed that it doubled the number of addressing bits in IPv4, from 32 bits to 64 bits. This would have been enough for at least 2.6 billion addresses for each ...
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3answers
262 views

What do the numbers used in a IPV6 address mean?

I am trying to understand IPV6. I have a server with the following IPV6 address: 2607:f750:0:3f::f59. I don't understand what the numbers mean. It looks totally different from an IPV4 address. ...
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1answer
38 views

Determining the way the IPv6 interface identifier was created

In IPv6 the 64bit interface identifier of an IPv6 address can be determined in one of 3 ways: Stateless Address Autoconfiguration: put in the MAC address of the NIC (+ FF:FE and flip a bit). ...
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2answers
327 views

Can't ping Linux IPv6 address from Windows XP

I gave an IPv6 address to my SUSE Linux machine on a VirtualBox VM with ifconfig eth0 inet6 add ... I can't ping that address from Windows XP (vice versa) The address of the Linux machine is efbb::26 ...
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2answers
622 views

How can I make localhost resolve to 127.0.0.1 instead of ::1?

When I ping localhost the address resolves to the ipv6 loopback of ::1 My MySQL and Apache installations expects the ipv4 address of 127.0.0.1 How can I configure my WindowsXP to resolve localhost ...
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0answers
212 views

IPv6 addresses in dnsmasq

As I need to use dnsmasq to route all requests on *.local to my local machine (and use there an IPv6 addresses), i set up the dnsmasq like this: /etc/dnsmasq.d/my-local.conf address=/local/::1 ...
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2answers
107 views

NDP entries on linux

Just as we have /proc/net/arp holding ARP entries in Linux, what is the file that holds the Neighbor Discovery Protocol (NDP) entries? I searched for it on the Linux box running IPv6, but to no avail. ...
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46 views

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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1answer
184 views

How to prevent IPv6 privacy extensions from breaking my long-lived SSH sessions?

When using SSH from my Windows 7 desktop to Linux servers, via IPv6, I'm having the following two problems, because of IPv6 Privacy Extensions: I'm used to keep ssh sessions open for days or weeks. ...
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2answers
207 views

How to connect a website has only IPv6 address without domain name?

If a server has only IPv6 address without domain name, how can I connect to server from my web-browser?
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1answer
54 views

IPv6 get alive hosts without ICMPv6?

How would you probe the first few ports on TCP/UDP to see the host is alive like Angryipscanner but only on ipv6?Too see if the hosts are alive without ICMPv6?I am on Windows.
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3answers
163 views

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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0answers
160 views

Can't ping Linux IPv6 bridge from host

I'm using a Linux box with two network interfaces as bridge (br0) and one system (X) behind the bridge with its own IPv6 address configured. Its other end is connected to a router. The bridge ...
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0answers
47 views

NET_IPV4_CONF_ARP_ANNOUNCE equivalent for IPv6

I'm looking for the Neighbor Discovery Protocol (NDP) equivalent of NET_IPV4_CONF_ARP_ANNOUNCE, to be set on the linux system (2.6.24) using sysctl(). The option net.ipv4.conf.all.arp_announce is used ...
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1answer
42 views

IPv6 Virtual Network in Linux

I'm going to do a project based on IPv6 Network. So I need to create a IPv6 Virtual Network in my Linux OS (I use Ubuntu). Also I need to create some virtual hosts in my virtual network and setup ...

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