IPv6 Temporary Address

I am little confused about the IPv6 temporary address. From my understanding, by default both Win7 and MAC comuputers generate IPv6 temporary address once they learn a prefix from RA message. And more imporant, they will use the temporary address as the source of the communications. For ex,  when a computer has one IPv6 address(got from DHCP) and one temporary address, it will use the temporary address for communications and the DHCP address will not be used at all. Has anyone seen any issues arised from using temporary address? Do you force computers to not using temporary address?
Following notes are taken from RFC4941 about the use of temporary address:
"The use of temporary addresses may cause unexpected difficulties with    some applications.  As described below, some servers refuse to accept    communications from clients for which they cannot map the IP address    into a DNS name.  In addition, some applications may not behave    robustly if temporary addresses are used and an address expires    before the application has terminated, or if it opens multiple    sessions, but expects them to all use the same addresses.    Consequently, the use of temporary addresses SHOULD be disabled by    default in order to minimize potential disruptions.  Individual    applications, which have specific knowledge about the normal duration    of connections, MAY override this as appropriate.
If anyone can share their experience of using temporary address in production network, that will be great!
Thanks.
Zhenning

So temporary addresses, or privacy addresses as they are somtimes called, work well for a lot of applications.  If you do not care about the privacy afforded by temporary addresses, you an disable them:
http://blackundertone.wordpress.com/2011/08/04/disable-windows-7-ipv6-random-temporary-addresses/
http://tech.buraglio.com/2011/07/macos-107-and-ipv6-privacy-addressing.html
Also, you can configure the routers such that the devices themselves do not use SLAAC at all and rely exclusively on DHCP, depending on whether or not your DHCPv6 server is managing addresses. 
See http://blogs.cisco.com/borderless/ipv6-automatic-addressing/ for more tips.

Similar Messages

  • How can I turn off IPv6 temporary addresses in a enterprise environment

    So in a default configuration Vista and Windows 7 clients will use IPv6 temporary address (per RFC 3041), but I would like to be able to disable this with a GPO.
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    setting.
    Any ideas on using a registry based GPO for this?

    Hi,
    OK, I understand what you want. But after I use the Process Monitor to capture the behavior, I found that a lot of registry keys would be changed. So you can not set it via registry unless the IPv6 is disabled.
    Thanks for understanding.
    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
    Thank you again for the answer.
    As a follow up question... How does one suggest/request a change in default behavior in a MS product?
    While the RFC 3041 addresses might be nice to have for the average consumer they are not ideal in a enterprise environment. I have found that the temporary addresses will register in DNS, but this doesn't completely solve the issue of tracking and accountability,
    you would still need a application to query, correlate and store that information.
    So it would be nice if the business versions of Windows Vista/7/2K8 and the next client OS would not have this behavior by default.

  • Reassigning IPv6 temporary address when it receives router advertisements

    Hi everybody.
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    *My environment*
    I list my environment that I tested as follows.
    1. MacBook Pro (A)
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    Card Type: AirPort Extreme (0x14E4, 0x93)
    Firmware Version: Broadcom BCM43xx 1.0 (5.10.131.16.1)
    IPv6 temporary address setting: net.inet6.ip6.use_tempaddr=1
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    TimeCapsule
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    3. MacBook Pro (B) (No problem with this Laptop)
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    Card Type: AirPort Extreme (0x168C, 0x87)
    Firmware Version: Atheros 5416: 2.0.19.10
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    N.B., All user data and settings are transferred to MacBook Pro (A). I think the difference between these two MacBooks is about hardwares.
    *The problem*
    1. Connect the MacBook Pro (A) to AP+Router.
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    The problem here is that MacBook Pro (A) configures _new_ temporary address, or it removes old temporary address. This causes additional issues on TCP connections because TCP sessions become no longer available after the temporary address has changed.
    This problem is not experienced my old MacBook Pro (B); i.e., it keeps the temporary address even after receiving router advertisements.
    All the data and setting in MacBook Pro (A) are transferred from MacBook Pro (B).
    Therefore, I think the problem is due to hardwares.
    I prefer to use IPv6 because I'm in a networking group and also prefer to use temporary addresses.
    Do you experience same problem or any suggestions to me?
    If you need additional environment description, please ask me.
    Thank you in advance, and sorry for my poor English.
    Message was edited by: scyphus

    This bug has been stealthily fixed in the update http://support.apple.com/kb/HT4250 today, though I have received no reply from Apple bug reporter site.

  • Can't set ipv6 static address

    As the topic states, I can not setup a static IP to save my life. I've enabled ipv6, I have a hostname6.ce1 I put the hostname (madrid-ipv6) in the hostname6.ce1 file but it will not stay set.
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    I'm sure I am missing something, and I am new to Solaris. I've got ipv6 static addresses setup in linux with no problems. It's just Solaris 10 that is kicking my butt.
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    edit: To darren: I've tried that as well. When the system boots, it gives me the error: "Failed to assign ipv6 address to ce1" or something similar to that.
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    ICMPv6 Address Unreachable from gateway fd01::e2
    for icmp6 from fd01::e2 to fd01::f2
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    Edited by: jonwheeler on Sep 11, 2008 9:47 AM

  • After security updates on Windows 2008 R2 ping returns ipv6 ip addresses

    After installing the updates shown on screenshot attached the server running windows 2008 r2 returns IPv6 ip addresses when pinging any device. Also Public Folder got populated with many icons that were not there. This is a server running terminal and
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    This one may help.
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  • 2504 WebAuth and IPv6 RADIUS Accounting (IPv6-Framed-Address)

    Hi Board,
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    Hi Board,
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    I tested it on a WLC 2504 with 8.0.100.0 code.
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    Johannes

  • Maintain two different address( Ex- Permenant, Temporary address)

    My Client want to Maintain permanent and temporary address at the same period in the infotype 6. Should i change the time constraint or there is any other method to maintain both address for the same period.

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  • EA6900 IPv6 invalid address issue

    I’m trying to setup IPv6 on my router (EA6900). My cable modem is a Motorola Surfboard 6120 DOCSIS 3.0 which is IPv6 compatible. The network interface card in my PC has IPv6 setup on it. My ISP (Charter Communication) has setting instructions at http://www.myaccount.charter.com/customers/Support.aspx?SupportArticleID=2665#prep4ip6 . I follow the instructions and I get this error from the router:
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    Please remember to Kudo those that help you.
    Linksys
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  • Ipv6 lookback address in hosts file

    Hi,
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  • Difference between address-family ipv6 and address-family ipv6 labeled unicast

    Hello Experts,
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    Thanks for the reply Nagendra...
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  • Get IPv6 gateway address on Windows XP

    Hi guys,
    Windows XP supports IPv6, but if I want to get the IPv6 gateway address linked to an adapter I've a big problem:
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    Please remember to mark the replies as answers if they help

  • IPv6 Static address

    I have a Swann Communication security camera system with their DVR8-4000 hooked to an IPv4 router, connected to the Internet using the new HughesNet Gen4 service. 
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  • IPv6 autoconfigured address breaks curl

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    I had the same problem with my new ISP, and I thought there was some sort of block on it 'cause I could use yaourt without problems on someone else's wifi. Thanks to this thread I gave a try disabling IPv6 through the kernel line, like it says here:
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  • IPv6 Duplicate Address issue

    I'm having a problem involving IPv6 with stateless autoconfig on my network. I have a Cisco 800 series router and we have several VLAN interfaces each configured with an IPv6 prefix. The problem I'm noticing is that whenever any host on the network tries to start up with stateless autoconfig they immediately detect a duplicate address for whatever address they are trying to use.
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  • DAD Ipv6 Duplicate Address Detection

    Hi everyone,
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    Gokmen...

    Hi Gokmen,
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    I stay tuned... As somebody may correct me if I am wrong!
    You may be interested by page 16 and 17, click on the graphics to see the animations...
    http://www.fredbovy.com/Tutorial/IPv6Tutorial-RELEASE2.html
    For more details about autoconfiguration you may be interested by this video (Presentation also available from slideshare, please check my wiki page)
    http://www.youtube.com/watch?v=958sRC306UE
    It would be funny
    Kind Regards,
    Fred
    15 years ccie #3013
    18 years ccsi #33517 (former #95003)
    IPv6 Forum Gold Certified Engineer
    IPv6 Forum Gold Certified Trainer
    Email: [email protected]
    Web: http://www.fredbovy.com
    Wicki: http://www.fredbovy.com/MediaWiki
    Twitter: http://twitter.com/#!/Fr
    Skype: FredericBovy

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