IPv6 is the successor to IPv4. Rather than 2^32 addresses (like IPv4), it has 2^128, which is 340,282,366,920,938,463,463,374,607,431,768,211,456 unique addresses (34 undecillion). IPv6 addressing is quite different to IPv4 and is not backwards compatible, but protocols that sit on top (HTTP, SSH, ...
-4
votes
1answer
112 views
Is ASCII to IPv6 Possible? [closed]
I NEVER SAID I WAS GOING TO DO THIS, I WAS JUST WONDERING IT IT WHERE POSSIBLE.
Address fe80:0000:0000:0000:0202:b3ff:fe1e:8329
Rule 1 fe80:0:0:0:202:b3ff:fe1e:8329
Rule 2 fe80::202:b3ff:fe1e:8329
...
3
votes
2answers
184 views
Unable to add IPv6 address to sendmail access list
I am running Sendmail 8.14.4 on Slackware 13.37. I have the following in my /etc/mail/access file and it works without any errors:
Connect:127 OK
Connect:10.0.1 RELAY ...
5
votes
4answers
669 views
Is IPv6 multicast routable over the Internet?
As I understand it, public IPv6 addresses allocated by the IANA will have the prefix 2000::/3. These ip addresses will be routable through the Internet.
IPv6 multicast addresses on the other side are ...
0
votes
0answers
118 views
ipv4 to ipv6 proxy solution other then netsh
I've been using netsh interface portproxy for ipv4-to-ipv6 proxy-ing. This works fine, except that I need something to listen on more than just a single IPv6 address, because the address on the server ...
1
vote
1answer
393 views
Does Windows Azure present an IPv6 address?
When using http://cloudflare.ipv6-test.com/validate.php to see if my website if IPv6 compliant, I see that it is not because it requires an AAAA DNS record.
My site is hosted on Azure, but I can't ...
4
votes
4answers
329 views
Enterprise IPv6 Migration - End of proxypac ? Start of Point-to-Point ? +10K users
Let's start with a diagram :
We can see a "typical" IPv4 company network with :
An Internet acces through a proxy
An "Others companys" access through an dedicated proxy
A direct access to local ...
1
vote
3answers
603 views
SLAAC and DNS, no really - what's the deal?
So I know that there are extensions to SLAAC in the works to enable DNS discovery via RAs (RFC 6106). But what was the original intent? How did the IPv6 designers envision things working without ...
1
vote
1answer
97 views
running ipv6 at home network [closed]
I'm looking for a home router solution that is able to do:
DHCPv6
NAT64 or something similar
my goal is to extend, my v6 test network (3 hosts), to my all local devices (tablets, xbox360, ...
1
vote
0answers
304 views
why ping6 fails if tcpdump shows ICMP6 request/reply traffic?
I'm having a very strange problem with IPv6 pings on OpenWRT (fon-ng firmware with IPv6 enabled) and hoping someone can help with investigation.
In short - wpan0 interface with address aaaa::1/64 is ...
2
votes
0answers
124 views
How to enable Ipv6 on my ubunutu 11.04 virtual machine
I have installed 3 VM's on my PC.(Ubuntu 11.04).I want to setup an IPV6 network to review and test some of the IPV6 tools like NDPMonitor.(monitors ICMP messages of Neighbour Discovery Protocol.)
IP ...
5
votes
1answer
494 views
How to traverse carrier-grade NAT (large-scale NAT) to reach VPN Server? [closed]
I currently run an OpenVPN Server via a home network connection that has a single, public, dynamic IPv4 address.
My provider (AT&T U-Verse) will apparently soon switch to a large-scale NAT and ...
3
votes
1answer
113 views
terminate ipsec transport at firewall?
I am exploring using ipsec transport mode to provide secure ipv6 access between 2 LANs and several remote users. I love the combo of a flat ipv6 global unicast address space combined with ipv6 ...
1
vote
1answer
186 views
Windows server trying to use IPv6 despite being turned off
I have a server which needs to communicate with another server (both win 2k8r2). One of them recently had an IP address change, and I suspect that the IPv6 address that the AD DNS server holds is now ...
2
votes
1answer
155 views
Is it normal for ip -6 route to accumulate entries in Linux?
On a Linux machine connected to the ipv6 internet via a router's radvd-advertised tunnel, ip -6 route accumulates recent addresses. Why does this happen? Is it expected behavior, or is the machine ...
0
votes
1answer
590 views
Why is connecting to a web server listening on an IPv6 link-local address unreliable / How is IPv6 neighbor discovery expected to work?
I've got the following setup:
My Windows 7 development box (or a freshly installed Windows 7 VM)
A Windows Embedded CE 6.0 based device with IPv6 enabled and a web server running
A USB RNDIS ...
0
votes
1answer
325 views
IPv6 stateless autoconfiguration not working on CentOS 6.2
I have a problem setting up IPv6 connectivity to two virtual hosts that I run on VmWare workstation. The hosts are CentOS 6.2 x86 and x86-64. Even though they are on a bridged network and there is a ...
0
votes
1answer
77 views
Accessing IPv6 router interface from a minimal Fedora installation? [closed]
I've recently installed Fedora 16 and am trying to set up a simple apache server. The only problem I've run into so far is that I'm unable to access my router's web interface from any box on my ...
0
votes
3answers
593 views
Pros and cons IPV6 vs stretched vlans
I'm having a hard time finding information about whether implementing ipv6 or using a stretched vlan is a better option for geographically dispersed sites is better. Does anyone know:
Problems with ...
2
votes
3answers
434 views
Windows Server 2003 RDP not listening on IPv6
i have a Windows Server 2003 machine; with IPv6 enabled:
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : newland.local
IP Address. . . . . . . . . . . . : ...
2
votes
2answers
153 views
How to configure something like “Reflexive ACL” on OpenBSD?
My U-Verse modem has something called "Reflexive ACL" described as
Reflexive ACL: When IPv6 is enabled, you can enable Reflexive Access
Control Lists to deny inbound IPv6 traffic unless this ...
5
votes
1answer
282 views
How does 6rd (IPv6 Rapid Deployment) route over the public internet?
First 6to4:
6to4 allows IPv6 Packets to be transmitted over IPv4. It's used to connect two IPv6 'islands' - not enable IPv4 to talk to IPv6 or vice versa. IPv6 address 2002:AABB:CCDD:: becomes IPv4 ...
5
votes
1answer
510 views
Win2k8R2 Obtaining DHCPv6 address, but has static configuration
I have a Windows 2008R2 server on a dual-stack network.
IPv4 is working fine (statically assigned) but the IPv6 stack is misbehaving; I have configured it with a static IPv6 address (::bbbb:150 ...
0
votes
2answers
313 views
Internet Explorer and IPv6
I can't seem to stop the IPv6 address being registered by our server. Does anyone know how?
This is causing slow browsing issues when browsing to spiceworks server using Internet Explorer.
The ...
3
votes
2answers
771 views
How ISPs will assign IPs /subnets for end users in IPv6
Consider two scenarios:
The end user has a simple computer, dual-stack
The end user has a LAN behind a dual-stack router
How will ISPs differentiate each one of these kind of users in IPv6?
An ...
1
vote
2answers
96 views
Is it possible to have Novell NCP on top of IPv6?
Is it possible to configure NetWare Core Protocol to run over IPv6?
2
votes
2answers
2k views
Neighbour table overflow on Linux hosts related to bridging and ipv6
Note: I already have a workaround for this problem (as described below) so this is only a "want-to-know" question.
I have a productive setup with around 50 hosts including blades running xen 4 and ...
3
votes
1answer
172 views
IPv4 is almost out in Asia-Pacific, what are people doing about it? [closed]
Asians and those in North America are going to be separated on the internet if ISPs / telecoms don't do something. European progress to IPv6 is taking place much faster than in North America. What ...
0
votes
1answer
505 views
Managed Ethernet switch per-port MAC address translation?
Just a shot in the dark here, but I thought I'd ask in case anyone has some ideas:
I've got a testing scenario where some (GUI-less/embedded) IPv6 devices are going to be temporarily plugged into the ...
2
votes
0answers
227 views
configuring IPsec with IPV6
I am working with racoon tool and ipsec-tools and I have been able to connect two devices with IPSEC working in transport mode. However, I did it with IPv4 addresses and when I change them to IPV6 ...
2
votes
1answer
373 views
IPV6 Bind/DNS DHCP
We are run the one event in that there 7000 people are visiting, with Laptop to provide then internet access.
We thought of setting up IPV6 DNS/DHCP all this people will be use LAN cable to get ...
1
vote
1answer
399 views
VMware ESX 5.0 blocking DHCPv6 solicitations in vSwitches?
We have a network on which we're setting up a test IPv6 deployment. Here's the layout:
Win2008R2 DHCP VM and Debian Squeeze radvd VM ->
vSphere 5.0 vSwitch -(Trunk)->
Catalyst 2960G -(Trunk)->
...
4
votes
1answer
780 views
How do I set up a basic IPv6 video stream using VLC
I'm teaching a class IPv6 and would like to create a lab for them to see the true benefit of ipv6 multicasting in action.
I created a multicast address for myself
ff15::1 (where ff is multicast, 1 ...
-2
votes
1answer
203 views
How important is IPv6 for home router? [closed]
So at the moment, I'm trying to figure out which router to buy for a home ADSL2 connection.
I've nailed it down to either the Billion 7700N (http://www.cnet.com.au/billion-bipac-7700n-339324712.htm) ...
1
vote
0answers
153 views
Attempting to DNS resolve / relay an IPv6 address for a host
I have a network switch doing IPv6 DNS relay to a Linux box (3.0.4-gentoo #7).
The packets (DNS request) are arriving fine at the Linux box.
Where I'm stuck now is how to resolve those, either by ...
2
votes
2answers
192 views
Lowest IPv6 host address in an address range
What is the lowest IPv6 host address in an address range; is it A:B:C:D:E:F:0:0/64 or A:B:C:D:E:F:0:1/64? Does IPv6 have a network address (0 = "this") like IPv4? I know one address type is depricated ...
1
vote
1answer
214 views
IPv6 ULA not working like I want
I'm trying to get IPv6 working for a big school project. I have a Dualstack line with an IPv6 ready modem. The server and client get there IPv6 automatically, but when I want to use static ULA ...
0
votes
2answers
88 views
how to “connect ipv6 client to ipv4 only server”
I have a linux server that supports only ipv4 and an IPv6 client. How should I use tunneling or NAT to get the connectivity done from ipv6 client to the ipv4 server? Client is a softphone that sends ...
5
votes
2answers
116 views
Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration?
Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration? From what I've been able to figure out, OS X 10.6.x will acquire an address via SLAAC, but it doesn't ...
3
votes
1answer
366 views
How do IPv4 only applications work on IPv6 only hosts?
Is there any way for IPv6-unaware applications to continue to work on a host with only IPv6 connectivity?
The IPv4 implementation of the host could know about the problem and just encapsulate the ...
3
votes
1answer
118 views
What is the motivation for DNS64?
I'm wondering why NAT64 needs something like DNS64 at all.
Couldn't an IPv6-only host, when trying to reach an IPv4-only host, just embed the IPv4 address of the target host in an IPv6 packet (by ...
7
votes
5answers
2k views
Managing parallel rules for ipv4 and ipv6 iptables?
We've recently started experimenting with IPv6, and one of the first issues we're having to contend with is dealing with a completely separate set of firewall (Linux iptables/ip6ables) rules for the ...
7
votes
4answers
2k views
Advantages of IPv4 over IPv6
In theory, how IPv4 is better than IPv6? I need only advantages of IPv4 for study purposes.
In another words - what are the pros of IPv4?
0
votes
1answer
272 views
Name resolution in an IPv6 network without a DNS server
Background:
I have a network with Windows and Linux machines
The router doesn't support IPv6, but the computers have link-local addresses (fe80::/10), and I plan to buy an IPv6-capable router in the ...
2
votes
2answers
441 views
Debian: IPv6-in-IPv4 over OpenVPN
Following (roughly) the instructions https://www.zagbot.com/openvpn_ipv6_tunnel.html at I now have the following:
Client
martin@theoria:~$ ifconfig
eth0 Link encap:Ethernet HWaddr ...
-2
votes
2answers
295 views
FreeBSD 9.0 supports only IPv6. What this practically means?
I have very scarce knowledge of IPv6 but I'm considering installing FreeBSD on an RDC device which acts as a server to my home network running services.
The last release states that one of the changes ...
1
vote
1answer
200 views
IPv6 MTU and MSS ignored in LAN?
I have a server with a (sixxs) IPv6 tunnel and a local network behind it. The tunnel has MTU of 1470, and a prefix with this MTU is advertised by radvd, and picked up by the local client:
...
1
vote
1answer
2k views
Can't ping using IPv6 address
My network setup is very simple: two win7-64 machines connected to a switch. IPv6 enabled for their network interface. No router no outside network no DHCP.
ipconfig report for the computer shows ...
7
votes
2answers
451 views
IPv6 without nat but what about an isp change?
I haven't worked with IPv6 outside of 4to6 tunneling on my home pc with stuff like GoGoNet. I've read about how it works in a general way. No NAT required (or suggested) and each client uses a public ...
0
votes
0answers
288 views
route all internet traffic via a virtual tap device and a public server on windows
We want to route all traffic from one pc to a local virtual device (TAP-Win32 Adapter which is also used by OpenVPN) and then from there to another tap device on a public server. after that all ...
0
votes
0answers
285 views
How to route all internet traffic via a virtual tap device and a public server
We want to route all traffic from one pc to a local virtual device (TAP-Win32 Adapter which is also used by OpenVPN) and then from there to another tap device on a public server. after that all ...
