SBS2008 to EX2013 migration - Disable IPv6?

Migrating SBS 2008/EX2007 to EX2013. EX2013 Deployment Wizard sez disable IPv6 as described here in Susan's blog:
http://msmvps.com/blogs/bradley/archive/2014/01/22/smbkitchen-disabling-ipv6-or-not.aspx
Susan said she planned to skip that step back in January, but no followup to know how it turned out.
When I disabled IPv6 on my SBS2008 (using the DisabledComponents=0xffffffff registry entry) I had major connectivity problems and had to re-enable IPv6. As one example, restarting Win 7 computers required booting them and logging on while off the LAN. Then
the network cable could be reconnected. Otherwise, the computer took hours to boot & log on, and Explorer would crash regularly once it did.
It looks like I'm going to HAVE to skip that step, but I'm wondering what I'm getting into by doing that. Anyone know if there's fallout during migration from leaving IPv6 enabled on the SBS, or anything I'll have to do differently?
Thanks!

Hi JRV529088,
Sorry for my delay.
Would you please let me confirm if the Exchange Server 2007 has both the Mailbox and Client Access server roles
installed?
Best regards,
Justin Gu

Similar Messages

Anyone done SBS 2008 to Exchange 2013 migration - disable IPv6 on SBS?

IPv6 enabled on ours without any problems. THanks for the links Anil, had not heard of those problems before

Well, considering over the scenario you have mentioned, I would like to refer you on this informative article that covers few parts of causes when disabling IPV6 on Exchange 2013 Server installation : http://mike-graham.co.uk/blog/2013/08/12/disabling-ipv6-on-exchange-2013-servers-causes-problems/Here is a well documented technet resource that also provides step-wise instructions when proceeding to migrate from Exchange 2007 to 2013 by checking all the required prerequisites : http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migra...Moreover, while need to migrate users mailboxes from Exchange 2007 to 2013, you may also consider on LepideMigrator for Exchange tool that provides a hassle-free environment to get this job done without having downtime or any further interruption.

Issues After Disabling IPv6 on Your NIC on SBS 2008

If you uncheck the IPv6 protocol from your network interface card on your Windows SBS 2008 server you may see the following issues after a reboot:
Microsoft Exchange services fail to start
Server hangs at “Applying Computer Settings…” (can eventually logon after 30 – 60 minutes)
Network icons show as offline
Some or all of the following events
Application Log Events
Source: MSExchange ADAccess
Event ID: 2114
Task Category: Topology
Level: Error
Description:
Process MAD.EXE (PID=2088). Topology discovery failed, error 0x80040a02 (DSC_E_NO_SUITABLE_CDC). Look up the Lightweight Directory Access Protocol (LDAP) error code specified in the event description. To do this, use Microsoft Knowledge Base article 218185,
“Microsoft LDAP Error Codes.” Use the information in that article to learn more about the cause and resolution to this error. Use the Ping or PathPing command-line tools to test network connectivity to local domain controllers.
Source: MSExchange ADAccess
Event ID: 2601
Task Category: General
Level: Warning
Description:
Process MSEXCHANGEADTOPOLOGY (PID=952). When initializing a remote procedure call (RPC) to the Microsoft Exchange Active Directory Topology service, Exchange could not retrieve the SID for account <WKGUID=DC1301662F547445B9C490A52961F8FC,CN=Microsoft Exchange,CN=Services,CN=Configuration,…>
– Error code=80040a01.
The Microsoft Exchange Active Directory Topology service will continue starting with limited permissions.
Source: MSExchange ADAccess
Event ID: 2102
Task Category: Topology
Level: Error
Description:
Process MAD.EXE (PID=2088). All Domain Controller Servers in use are not responding: SBS.sbs2008.local
Source: MSExchange ADAccess
Event ID: 2105
Task Category: Topology
Level: Warning
Description:
Process MAD.EXE (PID=2088). Exchange Active Directory Provider failed to obtain DNS records for domain sbs2008.local. DNS Priority and Weight for the Domain Controllers in this domain will be set to the default values 0 (priority) and 100 (weight).
Source: MSExchange ADAccess
Event ID: 2114
Task Category: Topology
Level: Error
Description:
Process MSEXCHANGEADTOPOLOGYSERVICE.EXE (PID=952). Topology discovery failed, error 0x80040a02 (DSC_E_NO_SUITABLE_CDC). Look up the Lightweight Directory Access Protocol (LDAP) error code specified in the event description. To do this, use Microsoft Knowledge
Base article 218185, “Microsoft LDAP Error Codes.” Use the information in that article to learn more about the cause and resolution to this error. Use the Ping or PathPing command-line tools to test network connectivity to local domain controllers.
Source: MSExchangeFBPublish
Event ID: 8197
Task Category: General
Level: Error
Description:
Error initializing session for virtual machine SBS. The error number is 0x80040a01. Make sure Microsoft Exchange Store is running. Also, make sure that there is a valid public folder database on the Exchange server.
Source: MSExchangeTransportLogSearch
Event ID: 7005
Task Category: General
Level: Error
Description:
Microsoft Exchange couldn’t read the configuration from the Active Directory directory service because of error: Failed to load config due to exception: Microsoft.Exchange.Data.Directory.NoSuitableServerFoundException: The Exchange Topology service on server
localhost did not return a suitable domain controller.
System Log Events
Source: Service Control Manager
Event ID: 7044
Task Category: None
Level: Warning
Description:
The following service is taking more than 16 minutes to start and may have stopped responding: Microsoft Exchange System Attendant
Source: Service Control Manager
Event ID: 7022
Task Category: None
Level: Error
Description:
The Microsoft Exchange Transport service hung on starting.
Source: Service Control Manager
Event ID: 7024
Task Category: None
Level: Error
Description:
The Microsoft Exchange Information Store service terminated with service-specific error 0 (0×0).

Hi,
Based on your description, it seems to be the same as the following blog.
Issues
After Disabling IPv6 on Your NIC on SBS 2008
Did you mean that encounter the same issue? If so, there is a resolution in that blog, please check if can
help you solve the issue.
If any other issue exists or any update, please don’t hesitate to let me know and provide more details. It
will help me understand clearly.
Best regards,
Justin Gu

How can I disable IPv6 EUI randomization with group policy?

I need to turn off IPv6 EUI address randomization. It can be done in netsh (a few commands) or powershell (Set-NetIPv6Protocol -RandomizeIdentifiers Disabled). How can I do this in group policy without scripting?

Hi Jordan,
Before going further, I hope that the suggestion provided by Martin can be helpful.
It seems that we can't configure this setting via native policy.To configure IPv6 settings,
we need to download ADMX files for IPv6. However, per the following article, the IPv6 settings that can be configured are:
Enable all IPv6 components
(Windows default)
Disable all IPv6
components (the setting you probably want)
Disable 6to4
Disable ISATAP
Disable Teredo
Disable Teredo and 6to4
Disable all tunnel
interfaces
Disable all LAN and PPP
interfaces
Disable all LAN, PPP and tunnel
interfaces
Prefer IPv4 over IPv6
How to Disable IPv6 through Group Policy
http://social.technet.microsoft.com/wiki/contents/articles/5927.how-to-disable-ipv6-through-group-policy.aspx
TechNetSubscriber Support
If you are TechNetSubscription user and have any feedback on our support quality, please
send your feedback here
Best regards,
Frank Shen
Please read the question before marking things as answers.

How can i disable ipv6 in OL7?

Hi everybody,
how can i disable ipv6 on my OL7 box?
In /etc/sysctl.d i have test it with the file: ipv6.conf:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.<interface>.disable_ipv6 = 1
But this doesnt work.
Does anybody know how can i disable IPv6 in Oracle Linux 7?

What I would recommend is not to set implicit or redundant parameters:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
There is no need to disable the "default" interface, since it is already included in the "all" statement.
I do not know, but there could be a possibility that such statements disable the network card in question, but in turn enable every other. In such case, your 2nd statement invalidates the first. Perhaps that was was part of the problem when using your other configuration.

Disable IPv6 in Solaris 11

I work for a regulated bank in the UK and we do not use IPv6. IPv6 is disabled on all our switches.
Despite this control we have previously been told by external auditors that we must also disable IPv6 on our servers. No problem in Solaris 10 and lower.
Can anyone tell me a simple way to do this in Solaris 11? there doesn't seem to be a way to only plumb IPv4 interfaces.
I found an unreliable source on the internet telling me to hack the file /etc/ipadm/ipadm.conf but this means I need to reboot after plumbing interfaces, something that we haven't had to do for how many years? There must be a sensible way to do this...???

Do not under any circumstances unless directed by Oracle Support as part of fixing a bug modify the ipadm.conf file directly.
You can't disable IPv6 in Solaris 10 either, what you can do is not have any IPv6 addresses active on plumbed interfaces.
You can do the same in Solaris 11. However you can't disable the IPv6 loopback address on Solaris 11 if you have zones
and want to be able to do 'pkg update' using system repostitory from inside the zone.
To remove the IPv6 address on net0 do something like this:
# ipadm delete-addr net0/v6addr

Will Disabling IPv6 harm a Windows 8 or Server 2012 R2?

I have a script that was written for Windows 7 and server 2008. I would like to know if it was harm a Windows 8 or any build of Server 2012 box. If so, could you please list what it would harm.
It was create to help with speed issues for an older network based program.
Thanks in advance.
netsh interface tcp set global autotuning=disabled
ocsetup MSRDC-Infrastructure /uninstall
@Echo off
@ECHO Windows Registry Editor Version 5.00 > %TEMP%\DisableIPv6.reg
@ECHO [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters] >> %TEMP%\DisableIPv6.reg
@ECHO "DisabledComponents"=dword:ffffffff >> %TEMP%\DisableIPv6.reg
@ECHO [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters] >> %TEMP%\DisableIPv6.reg
@ECHO "Smb2"=dword:00000000 >> %TEMP%\DisableIPv6.reg
REGEDIT /S %TEMP%\DisableIPv6.reg
ipconfig /flushdns
sc config CscService start= disabled
sc config lanmanworkstation depend= bowser/mrxsmb10/nsi
sc config mrxsmb20 start= disabled

Hi:
I don't think anyone can say for sure if it would cause any harm to any build of Windows 8 or Server 2012Rx. No one would have tested disabling IPV6 on all the possible combinations. The conventional wisdom is to NOT disable IPV6, but given special
circumstances I suppose it might be done:
http://blogs.technet.com/b/sbs/archive/2008/10/24/issues-after-disabling-ipv6-on-your-nic-on-sbs-2008.aspx
While written for Server 2008 and SBS 2008, you might want to check the above link for ideas. About half way down it discusses some considerations.
Are you still running some older program that might benefit from this? If so, have you actually tested it without disabling IPV6 on say one server and one station. It would be easy enough to test then reverse the changes if there was no perceived
benefit.
Larry Struckmeyer[MVP] If your question is answered please mark the response as the answer so that others can benefit.

HT4667 How to disable IPv6 on MAC OS X Lion?

Hi everyone,
I am using Macbook Air OS X Lion. I have been facing slow internet browsing problem from quite a while now. I checked the forums and found that lot of people are facing the same problem. Also found that disabling IPv6 or setting it to manual mode will help fixing the issue. But another big challenge is how to do it. I tried setting it to manual which would need router address, IPv6 address and prefix length which is supposed to be collected from your ISP. Unfortunately Comcast hasnt implemented IPv6 yet so couldnt find that information. Also couldnt find the disable option as mentioned in one of the Apple article.
So I am stuck with Macbook air with slow internet speed. If anybody could help, it would be much apprecaited.
Thanks,
SJ

robughblah wrote:
see https://answers.syr.edu/display/network/Disable+IPv6+on+Mac+Lion+and+Mountain+Li on
This solved my problem. Thanks

EA3500 Smart Wi Fi - How to disable IPV6 to address Parental Control Issue

Hi
I've been reading that parental controls does not work with IPV6.
I would like to disable IPV6.
How would I do that?
P.S.: I noticed responses for EA4500 that there is a check box to disable the IPV6. Very straight forward but my interface
does not have the same layout of the GUI.
Thanks

Hi petroski1, the process of disabling IPv6 in your router depends if you’re using the Classic user interface or the Linksys Smart Wi-Fi. You may refer to this link, for instructions: http://kb.linksys.com/Linksys/ukp.aspx?pid=80&app=vw&vw=1&login=1&json=1&docid=bd520bcb07a6474596169...
If you’re using the Classic one, select IPv6 under the Setup tab and just disable it. And if you’re also using the Linksys Smart WI-Fi, go to Connectivity, select Internet settings, click on IPv6 click edit and make sure to uncheck the enable box.

Disabling ipv6 in iOS 8 and/or Airport base station

I recently replaced my iPhone 4 running iOS 7 with an iPhone 6 running iOS 8.0.2. The iPhone 4 never had any problem accessing wifi, whether at home, at work, or at various other locations.
Ever since getting the iPhone 6 I've been unable to get the wifi to work properly while at home using the wireless net work run from my Time Capsule. It works fine if I connect to a Verizon FiOS wireless router. It works fine at work (Cisco wifi gear, I believe). It works fine at places like Starbucks, etc. It only appears to have issues with connecting to the Time Capsule. When I connect the phone to my Time Capsule I get a strong wifi signal, it's just that anything internet related times out after a long period of time. I'm completely unable to access anything whether in Safari, Mail, or anything else.
I've searched the forums, Google, etc. for help and I've tried re-installing iOS, resetting my wireless network settings, disabling wifi location services, etc. but none of that has helped. It just occurred to me that one big difference between the Time Capsule and most (if not all) of the other wifi access points I'm able to successfully connect to is that the Time Capsule and the iPhone appear to enable ipv6 by default. I'm wondering if the iPhone is trying to establish an ipv6 connection through the Time Capsule. That could certainly explain why all internet access just times out on my iPhone when connected to the Time Capsule.
So as a test, is there any way to completely disable ipv6 on either the Airport/Time Capsule and/or on the iPhone itself? I would love to be able to test this theory out.

This is exactly my point!
Looking at the structure of your network in your post the gigabit wired computers can speak to each other at gigabit speeds but a gigabit wired computer CANNOT speak to an AppleTV through the Wireless 'n' Router at wireless 'n' speeds UNLESS the router has gigabit capable ports.
I can't find one that has, so the maximum speed of transmission of data from a wired computer with iTunes through the wireless 'n' router to a wireless 'n' AppleTV can only be as fast as the ports on the router which is 10/100 mbps which is far below the speeds capable over wireless 'n'.
To put it simply the only way to get wireless 'n' speed transmissions to AppleTV is to feed the data to the base station using wireless 'n' because a wired connection just isn't fast enough (even if the computer has a gigabit ethernet port and is connected to a gigabit switch) because the 10/100 mbps ethernet ports on the base station are a major bottleneck!
I can't believe they didn't think of this!!!

Disable ipv6 in solaris 11 express (2010.11)

Is there a way to disable ipv6 in Solaris 11 Express?
I can unlplumb inet6 interfaces but it created again after reboot.
# ifconfig v1 inet6 unplumb
# ifconfig lo0 inet6 unplumb
# ipadm show-if
IFNAME STATE CURRENT PERSISTENT
lo0 ok -m-v------4- ---
v1 ok bm--------4- -46
Is there a way to get that change persistent?
And what is there right way to get rid of ndpd daemon?
Whenever I disable svc:/network/routing/ndp:default it gets back online by 'routeadm -u' after reboot.

I know how to create addresses. I have no problem with ip4.
Addresses created and persistent across reboot.
The only problem that there is also bunch of ipv6 interfaces brought up at reboot and NDP daemon.
For now I found workaround:
1. make lo0 controlled by ipadm:
# ipadm delete-if lo0
# ipadm create-if lo0
# ipadm create-addr -T static -a 127.0.0.1/8 lo0/v4
2. Remove lines with "_family=26" from /etc/ipadm/ipadm.conf
3. reboot.
That's all I wanted.
# ipadm show-if
IFNAME STATE CURRENT PERSISTENT
lo0 ok -m-v------4- -4-
v1 ok bm--------4- -4-
# routeadm -u
# routeadm | grep ndp
disabled svc:/network/routing/ndp:default
If anyone know how to do the same without editing ipadm.conf please tell.

Disabling IPv6 on 2008R2 Domain Controllers... Best Practice?

At the end of last year I had a call with Microsoft Support in which I spoke with a member of the Directory Services team regarding an issue. The issue was resolved with no further problems, but while conversing with the Technical Support Engineer
I queried him on another issue regarding a second copy of our DNS zone in Active Directory. He looked at it (remoted in via RDP) then looked at my NIC properties and stated that the reason it happened is because we are running IPv6 on our DCs.
I told him we do that on all our servers. (leave IPv6 enabled.) He then stated that we should not do that, expanding by saying that "Microsoft is in the process of rewriting documentation as IPv6 is no longer supported on Domain Controllers."
Needless to say I could not believe this. I told him how Exchange on an SBS server cannot have IPv6 disabled as the server will stop booting, but he was very adamant about it; he even put me on hold for 10 minutes then came back saying he confirmed
that this is the case and spoke with the "Documentation Team" and the new Best Practices would be released within the next month. In the meantime he recommended I disable IPv6 on all my DCs. (I work in Consulting so that's a lot of DCs at various different
business entities.)
I didn't believe him then, and I don't believe him now. Reviewing the FAQ linked through http://support.microsoft.com/kb/929852 Says that Microsoft does not recommend disabling IPv6. Of course no documentation ever came out, nor have I
found anything to agree with his statements. (we solved the duplicate partition issue ourselves.)
I just wanted to post here and see if anyone else has heard of this, maybe I'm the one not up and up on my info. Has or does Microsoft plan on reversing course on the new IPv6 technology that 2008 and up are built on? I would think that quite
preposterous!
Thanks,
Christopher Long
Science is a way of thinking much more than it is a body of knowledge. -- Carl Sagan

There are cases where you DO WANT to disable IPv6 on a domain controller.
Example: you have an IPV4 network and do not have IPV6 deployed. In this case if you are not using IPv6 but leave it enabled than Windows will assign itself an IPv6 at random via the APIPA process. That IP address can and does change when you reboot the
server.... So I bet you see the problem here.
If you build a domain controller with IPv6 enabled - it will register it's IPV6 address in DNS as offering AD services. Then when you reboot that domain controller and that address changes - BOOM. AD comes crashing down. AD relies heavily on DNS. Windows
thinks it's smarter than you and registers it's IPv6 address obtained via APIPA in DNS. Now that's a problem. Particularly because Win Server 2008+ prefer IPV6 over IPV4 networks. So communication can blow up even if a valid IPv4 network is available.
So yes - there are instances where you do want to - in fact need to - disable IPv6 on domain controllers. Microsoft's documentation does not reflect this but it should. At a minimum if they want you to leave it on they should at least remind you to set a
static IPv6 address if you're running an IPv4 network.
(ask me how I know all this over a beer some time)
I opted to just disable it. Despite MS's documentation warning of the contrary - I've seen no adverse impacts. Exchange, Sharepoint, AD, etc. all humm along fine.

Cannot start tftpd(package from tftp-hpa) if disabled ipv6

I disabled ipv6 with "alias net-pf-10 off" or "options ipv6 disable=1" in /etc/modprobe.d/modprobe.conf and reboot system,tftpd will start failed and with no error messages in /var/log/messages,does any one can figure this out?

Sorry the answer to your problem arrives so late, but today I installed tftp-hpa and faced the same problem, it started only start if ipv6 was enabled, and no error message was thrown.
I got it to work with ipv4 by adding "-4" switch to /etc/conf.d/tftpd:
# Parameters to be passed to TFTPD
TFTPD_ARGS="-l -4 -s /var/tftpboot"
I have also added this information to the wiki.

How to disable ipv6 address autoconfiguration ???

I am trying to disable ipv6 stateless address autoconfiguration to implement what this document describes:
http://docs.sun.com/app/docs/doc/816-4554/6maoq01o3?a=view
There are several problems though:
1)The manual says that something must be put inside the hostname6.xxx file but then goes on to give the command as it should be given from the command line instead of the content of the file. The manual should provide some form of exapmle content for the file.
2)I go to /etc/inet/ndpd.conf and put "ifdefault StatelessAddrConf false" inside, then I pkill -HUP in.ndpd and finally I issue ifconfig eri0 inet6 token fe80::c/10. However nothing happens. The interface address remains the one generated through autoconfiguration.
Could someone that has knowledge of this subject provide any help?
Thanks very much,
Thanasis

Hi,
I have a same problem, and think we didn't understand the documentation.
Here is the link of the ndpd.conf configuration page:
http://docs.sun.com/app/docs/doc/816-4554/6maoq01qt?a=view#ipv6-ref-10
I think this is the right sintax:
if
Sets per-interface parameters. Use the following syntax:
if interface [variable-value]
Table 11�3 /etc/inet/ndpd.conf Interface Configuration Variables
StatelessAddrConf
True
Controls whether the node configures its IPv6 address through stateless address autoconfiguration. If False is declared in ndpd.conf, then the address must be manually configured. For more information, refer to How to Configure a User-Specified IPv6 Token.
I think the variable is this: StatelessAddrConf
if-variable-name StatelessAddrConf false
I think: if StatelessAddrConf false
But I found the 'false' parameter with uppercase and lowercase letter.
(It is not working for me!)
And I found another configuration file, what is include the rules of the address (/usr/sbin/ipaddrsel ).
Here is the link:
http://docs.sun.com/app/docs/doc/816-5166/6mbb1kq56?a=view
Maybe, I found the solution.
http://docs.sun.com/app/docs/doc/816-4554/6maoq01qt?a=view#ipv6-ref-10
You can creat a logical interface, and you can set the IP address of this interface.
Example 11�6 Adding a Logical IPv6 Interface With the -addif Option of the ifconfig Command
The following form of the ifconfig command creates the hme0:3 logical interface:
// this is teh example, and it is not perfect on Sol10
# ifconfig hme0 inet6 addif up
Created new logical interface hme0:3
This form of ifconfig verifies the creation of the new interface:
# ifconfig hme0:3 inet6
hme0:3: flags=2000841<UP,RUNNING,MULTICAST,IPv6> mtu 1500 index 2
inet6 inet6 fe80::203:baff:fe11:b321/10
Here is my solution:
ifconfig e1000g0 inet6 addif 1234:0000:0000:0000:0200:50FF:FE09:B980/10
ifconfig e1000g0:1 inet6 up
# ifconfig -a6
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
inet6 ::1/128
e1000g0: flags=2000840<RUNNING,MULTICAST,IPv6> mtu 1500 index 2
inet6 fe80::20d:60ff:feee:aba8/10
ether 0:d:60:ee:ab:a8
e1000g0:1: flags=2000841<UP,RUNNING,MULTICAST,IPv6> mtu 1500 index 2
inet6 1234::200:50ff:fe09:b980/10
I have special IP address, but I don't know that it is working or not.
If you have any idea, please write!
Br,
Sanyi

HT4667 I need to disable IPv6 in Mavericks.

When I try to disable IPv6 in Network Systems Preferences under Advanced, TCP/IP the only options I am presented with are "Automatic", "Manually", and "Link-local only". Shouldn't there be an option "Off" also? Is there some other way to turn off IPv6 in Mavericks?

HI Carpil,
to continue the same discussion i found following things on my Mavericks,
$ networksetup -listallnetworkservices
An asterisk (*) denotes that a network service is disabled.
Ethernet Adaptor (en3)
Wi-Fi
Bluetooth PAN
Thunderbolt Bridge
Ethernet Adaptor (en1)
Bluetooth DUN
$ networksetup -setv6off "Thunderbolt Bridge"
$ networksetup -setv6off "Bluetooth DUN"
$ networksetup -setv6off "Ethernet Adaptor (en1)"
$ networksetup -setv6off "Ethernet Adaptor (en3)"
$ networksetup -setv6off "Bluetooth PAN"
$ networksetup -setv6off "WI-Fi"
$ networksetup -listallnetworkservices
An asterisk (*) denotes that a network service is disabled.
Ethernet Adaptor (en3)
Wi-Fi
Bluetooth PAN
Thunderbolt Bridge
Ethernet Adaptor (en1)
Bluetooth DUN
why it is not switching it off
and also i can see ipv6 address ::1 and fe80:1::1 being present
and also when i run $ netstat -i ipv6 -gps
Name Mtu   Network       Address            Ipkts Ierrs    Opkts Oerrs Coll
lo0   16384 <Link#1>                          1155     0     1155     0     0
lo0   16384 localhost   ::1                   1155     -     1155     -     -
lo0   16384 127           localhost           1155     -     1155     -     -
lo0   16384 nikhils-mac fe80:1::1             1155     -     1155     -     -
so I Was curious how to disable it, and why this command not executing after i give admin user password.

SBS2008 to EX2013 migration - Disable IPv6?

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