Prefer ipv4 over ipv6


  1. gabgab
    Posts : 310
    Microsoft Windows 10 Home 64-bit 19045 Multiprocessor Free
       New #1

    Prefer ipv4 over ipv6


    hi,

    I want to set ipv4 to be preferred over ipv6, the other day i've used the tips from this Ping returns IPv6 Address, ping IPv4 in Command Prompt - TheITBros on my 2 windows10 computers and everything worked out great!

    Now, i just did a win10 update and i noticed that that no longer works even by doing the very same "command" and it kinda gets ignored. Did they just remove the functionality?

    This is what i get from netsh interface ipv6 show prefixpolicies (i don't get the longer list anymore but just these):

     Prefer ipv4 over ipv6-image.png

    So it seems to be preferring ipv4, yet when i ping my site (available on both ipv4 and ipv6), i get output with ipv6, same as google.com - the other day it was working nicely to ipv4 and i only used these 2 commands they suggested:

    netsh interface ipv6 set prefix ::/96 60 3

    netsh interface ipv6 set prefix ::ffff:0:0/96 55 4

    what's going on? I don't want to disable it completely (i know i can disable it from the router or from the network card properties, i just want to de-prioritise it)

    [Version 10.0.19044.1387]

    thank you,
    Gabrio

    - - - Updated - - -

    might have answered myself, i've added

    netsh interface ipv6 add prefixpolicy ::/0 40 1

    and it did the trick... i wonder if it will stick now :)
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  3. Paul Black
    Posts : 18,044
    Win 10 Pro 64-bit v1909 - Build 18363 Custom ISO Install
       New #2

    Hello @gabgab,

    I have noticed that you have NOT had ANY replies, so I thought that I would try and help.

    Are you talking about something like this? . . .

    > How to Enable or Disable IPv6 in Windows 7, Windows 8, and Windows 10

    This might also be of interest => How to Change IPv4 and IPv6 DNS Server Address in Windows

    I hope this helps.
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