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Thread: IPV6 disabling in Suse in general ?

  1. #1

    Default IPV6 disabling in Suse in general ?

    I've had a hell of a time with this and now all but YAST2 are ok. Going back some time to 10.0 this could be used to disable it very completely.

    open terminal and run
    echo "alias net-pf-10 off" >> /etc/modprobe.conf
    echo "alias ipv6 off" >> /etc/modprobe.conf

    restart computer.

    Has anyone used this on more recent issues even 11.4 and are there any repercussions?
    I assume that the inverse will but it back on ie off's just become on's?

    I will be using cups when I install my printer which is one concern and I am not at all sure that modprobe will do anything anymore?

    I also recollect that there is a command to cause the kernel to effectively reboot which would save restarting. Can't remember what it is. Maybe some one can refresh my memory.

    John

  2. #2
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    Default Re: IPV6 disabling in Suse in general ?

    On 04/10/2011 06:06 PM, ajohnw wrote:
    >
    > echo "alias net-pf-10 off">> /etc/modprobe.conf
    > echo "alias ipv6 off">> /etc/modprobe.conf


    forget that...'they' rolled IPv6 into the kernel with 11.2 (or .3, or .1
    i don't really remember)..

    so if yours has it in the kernel, you need to add this to the boot
    options in grub's menu.lst

    Code:
    ipv6.disable=1
    and, many indivudual net apps carry internal IPv6 code...firefox for
    sure is usually in need of redirection...but you said "in general", so i
    cease..

    sorry, i too am drawing a blank on the magic to tell the kernel to pay
    attention, without booting..

    --
    CAVEAT: http://is.gd/bpoMD
    [NNTP via openSUSE 11.3 + KDE4.5.5 + Thunderbird3.1.8]
    Maybe the developers are not here because they are so busy fixing these>
    http://tinyurl.com/392jnb

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    Smile Re: IPV6 disabling in Suse in general ?

    So I have been having a hell of a time recently getting to the openSUSE forums. I can't place it to anything in particular except the issue is affecting two computers running different versions of openSUSE. All of a sudden, I could not get to the openSUSE forums reliably and the issue was DNS related. I switched to using the openDNS servers, but it was hard to tell if this was really helping or not. So, I have went the disable ivp6 in the kernel and rebooted. It is too early to tell if this is the problem or not, but for now one computer seems OK. Why all of a sudden would access to the openSUSE forums stop working properly if ivp6 is enabled? Can anyone hazard a guess?

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

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    Default Re: IPV6 disabling in Suse in general ?

    Quote Originally Posted by jdmcdaniel3 View Post
    Why all of a sudden would access to the openSUSE forums stop working properly if ivp6 is enabled? Can anyone hazard a guess?
    Some DNS servers mishandle requests for IPv6 addresses (AAAA records).
    openSUSE Leap 15.3; KDE Plasma 5.18.6;

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    Default Re: IPV6 disabling in Suse in general ?

    On 04/10/2011 09:36 PM, jdmcdaniel3 wrote:
    >
    > Can anyone hazard a guess?
    >


    some router or DNS between your keyboard and opensuse.com is set up wrong..

    did you also shut off IPv6 in your firefox?

    [i asked in your other thread but didn't get an answer: if you get to
    the forum by IP when you could not by name? that would hint to router vs
    Domain Name Server failure...as would the traceroute i suggested]

    --
    CAVEAT: http://is.gd/bpoMD
    [NNTP via openSUSE 11.3 + KDE4.5.5 + Thunderbird3.1.8]
    Maybe the developers are not here because they are so busy fixing these>
    http://tinyurl.com/392jnb

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    Unhappy Re: IPV6 disabling in Suse in general ?

    Yes, I could get to the forum by IP, but it only made the first page work as the rest would still fail when DNS is not working. I continue to have an issues, even since our last message. It works to the forum and then it does not. I have disabled ipv6 in Firefox & Kernel. Removed the openDNS in my router, going back to the default for Time Warner. Nothing seems to fix the intermittent DNS ability to find the openSUSE forums from my home.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  7. #7
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    Default Re: IPV6 disabling in Suse in general ?

    On 04/10/2011 04:06 PM, jdmcdaniel3 wrote:
    >
    > Yes, I could get to the forum by IP, but it only made the first page
    > work as the rest would still fail when DNS is not working. I continue
    > to have an issues, even since our last message. It works to the forum
    > and then it does not. I have disabled ipv6 in Firefox& Kernel.
    > Removed the openDNS in my router, going back to the default for Time
    > Warner. Nothing seems to fix the intermittent DNS ability to find the
    > openSUSE forums from my home.


    I also use Time Warner as my ISP. Mine is in Kansas City. With it, I run
    full-blown IPv6 as it comes out of the box. I don't have any IPv6 non-local
    addresses, but nothing gets in the way. On the other hand, I did get fed up with
    the delays that came from Road Runner's DNS servers, and changed
    /etc/resolv.conf to use Google's public servers with addresses 8.8.8.8 and 8.8.4.4.

  8. #8
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    Smile Re: IPV6 disabling in Suse in general ?

    I also use Time Warner as my ISP. Mine is in Kansas City. With it, I run
    full-blown IPv6 as it comes out of the box. I don't have any IPv6 non-local
    addresses, but nothing gets in the way. On the other hand, I did get fed up with
    the delays that came from Road Runner's DNS servers, and changed
    /etc/resolv.conf to use Google's public servers with addresses 8.8.8.8 and 8.8.4.4.
    Thanks Larry for the information. I will give them a try. I just have no idea what is wrong, but a better DNS server might be the answer.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  9. #9
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    Smile Re: IPV6 disabling in Suse in general ?

    I found the following listing for DNS servers including Google and Level 3. I happen to know that Level 3 has a server farm close by my location as I did work on their HVAC control system, so I am giving theirs a try to see what it does.

    Code:
    Google
    
    8.8.8.8
    8.8.4.4
    
    Level 3 Communications (Broomfield, CO, US)
    
    4.2.2.1
    4.2.2.2
    4.2.2.3
    4.2.2.4
    4.2.2.5
    4.2.2.6
    
    Verizon (Reston, VA, US)
    
    151.197.0.38
    151.197.0.39
    151.202.0.84
    151.202.0.85
    151.202.0.85
    151.203.0.84
    151.203.0.85
    199.45.32.37
    199.45.32.38
    199.45.32.40
    199.45.32.43
    
    GTE (Irving, TX, US)
    
    192.76.85.133
    206.124.64.1
    
    One Connect IP (Albuquerque, NM, US)
    
    67.138.54.100
    
    OpenDNS (San Francisco, CA, US)
    
    208.67.222.222
    208.67.220.220
    
    Exetel (Sydney, AU)
    
    220.233.167.31
    
    VRx Network Services (New York, NY, US)
    
    199.166.31.3
    
    SpeakEasy (Seattle, WA, US)
    
    66.93.87.2
    216.231.41.2
    216.254.95.2
    64.81.45.2
    64.81.111.2
    64.81.127.2
    64.81.79.2
    64.81.159.2
    66.92.64.2
    66.92.224.2
    66.92.159.2
    64.81.79.2
    64.81.159.2
    64.81.127.2
    64.81.45.2
    216.27.175.2
    66.92.159.2
    66.93.87.2
    
    Sprintlink (Overland Park, KS, US)
    
    199.2.252.10
    204.97.212.10
    204.117.214.10
    
    Cisco (San Jose, CA, US)
    
    64.102.255.44
    128.107.241.185
    
    logo2 Public DNS Servers
    OpenNIC
    
    202.83.95.227 (au)
    119.31.230.42(au)
    178.63.26.173 (de)
    217.79.186.148 (de)
    27.110.120.30(nz)
    89.16.173.11 (uk)
    69.164.208.50 (us)
    216.87.84.211(us)
    2001:470:8388:10:0:100:53:20 (us)
    2001:470:1f10:c6::2 (us)
    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  10. #10
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    Smile Re: IPV6 disabling in Suse in general ?

    lwfinger, per your suggestion, I have switched to the Google DNS servers.

    Code:
    Google
      
    8.8.8.8 
    8.8.4.4
    They seem to work faster to me than the Level 3 ones. So, we will give a try for a while and see what we get.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

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