4
votes
2answers
102 views

How can I assign IPv6 addresses based on existing IPv4 addresses?

I have several hundred Server 2008 R2 machines with static IPv4 addresses. I'd like to enable IPv6 on each interface, and then automatically assign IPv6 addresses to them based on their existing IPv4 ...
10
votes
3answers
2k views

How to prevent delays associated with IPv6 AAAA records?

Our Windows servers are registering IPv6 AAAA records with our Windows DNS servers. However, we don't have IPv6 routing enabled on our network, so this frequently causes stall behaviours. Microsoft ...
1
vote
2answers
2k views

IPv6 on Server 2008R2 kills DNS resolution? Internet slowdowns?

I have been having intermittent Internet slowness for some time. It has been really challenging to me, and I have tried so many things. I replaced the modem, tried 3 routers, replaced a smart switch ...
1
vote
0answers
299 views

Some workstations/servers on the domain respond with IPv6 instead of IPv4 addresses, even though IPv6 is disabled across the board

Earlier this week I've noticed some issues on my network. For example when I ping my machine (from my machine) using the hostname (or FQDN), I see a response from an IPv6 address. ...
1
vote
0answers
195 views

How do I configure stateful DHCPv6 in Windows Server to allow clients to ping each other?

How do I configure stateful DHCPv6 in Windows Server to allow clients to ping each other? I would like to configure my Windows 2k8 DHCP server to distribute IPv6 addresses in my office network that ...
0
votes
1answer
292 views

SMTP - Remove IPv6?

We're doing a "try-out" of SmarterTools SmarterTrack (help desk) software. We can't get it to send email. We showed someone at SmarterTools our log - SmarterTrack keeps its own SMTP log - and they ...
0
votes
1answer
488 views

IPv6 6to4 on Windows Server

I'm looking for a relatively simple guide to setting up an IPv6 tunnel properly. This network currently has a server (Windows Server 2008R2) running RRAS that establishes connectivity to the internet ...
5
votes
1answer
837 views

KVM virtual machines cannot reach IPv6 web sites

I have a freshly installed Windows Server 2008 R2 SP1 virtual machine which is completely unable to reach any IPv6 web pages, despite apparently having proper IPv6 connectivity. In addition, other ...
0
votes
1answer
131 views

Windows 2008 R2 performance IPv6 traffic vs IPv4

Is there reliable stats on performance of Windows server 2008 R2 with intense TCP traffic over IPv6 vs IPv4 ? I know IPv6 header is larger but easier to process for the routers. but what about ...
0
votes
1answer
86 views

IPV6 settings server nic [closed]

I'm building a small network of 5 servers (2008R2) and for networking IPV4 settings are already set-up and working. (static IP's for all servers) All the NICS have support for IPV6 but for now all of ...
0
votes
2answers
95 views

Using Direct Access to allow mobile users to have GPO and the Domain experience

I'm interested in using Direct Access mainly so I can apply GPO to mobile clients and control the "domain experience" these users have. Q: Does Direct Access allow end users to transparently work ...
5
votes
1answer
767 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 ...
6
votes
2answers
2k views

Inbound Windows Firewall Core Networking Rules

I've just purchase a Windows Server 2008 R2 VPS plan and I was alarmed to see the default configuration had Windows firewall disabled. I've enabled the firewall and disabled most of the inbound rules, ...
2
votes
0answers
807 views

Windows 7 Client gets incorrect IPv6 Prefix Length

I am currently setting up IPv6 and DHCPv6 for Server 2008 R2 on my private network for testing. I was able to get DHCPv6 to work by configuring a static, then setting up the scope. I was also able to ...
2
votes
1answer
746 views

IPv6 host does not respond to Neighbour Solicitation

I have a Windows Server 2008 R2 machine here that is just not responding to Neighbour Solicitation requests (the IPv6 equivalent of ARP). It can see the requests, it's just chosing not to respond to ...
4
votes
1answer
616 views

Can I selectively register IPv6 addresses in DNS with windows dns auto-update?

We operate in a two-address model for our production ipv6 network -- we have an internal site-to-site vpn-connected ULA range in fd00::/8, we also have IPv6 external addressing in 2001::/16. We ...
7
votes
6answers
25k views

Disable IPv6 on Loopback address (Localhost, Computer name, …)

We tried installing a 3rd party software product on a new Windows Server 2008 R2 machine and found that everything works except for accessing local services through loopback addresses such as ...
2
votes
2answers
8k views

Command-line tool to disable IPv6 in 2K8R2?

I'm in the process of deploying a bunch of Win2K8R2 VMs via vSphere's deployment template stuff, and in the deploy specification it allows you to punch a list of commands to run. Aside from ...
8
votes
2answers
310 views

For an internal cluster, is it good idea to use IPv6?

For an internal cluster (db server, web servers etc..), is it good idea to use IPv6, which is faster and more secure? And make use of IPv4 just for the internet connection. Is it good idea? (sorry ...