Set Preference for IPv4 over IPv6 on Windows 7

Duffy — Mon, 05 Apr 2010 02:58:53 +0000

By default on Windows 7 IPv6 is preferred over IPv4, this is a nuisance when your IPv6 connectivity is supplied via a 6 to 4 tunnel. This tutorial will show you how to set preference for IPv4

Open regedit Start -> Search -> regedit
Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\tcpip6\Parameters\
Create a DWORD value named DisabledComponents, please note this is case-sensitive
Edit the DisabledComponents value and set it to 20

Restart the computer for changes to take effect.

An alternative way off doing this would be to just to import a .reg file containing the following

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters]
"DisabledComponents"=dword:00000020

Disabling IPV6 on Debian

Duffy — Tue, 07 Jul 2009 15:50:48 +0000

If you don't use ivp6 for anything and your ISP doesn't support it theres not much of a need to have it enabled. To disable it we need to edit /etc/modprobe.d/aliases

nano /etc/modprobe.d/aliases

By default you will have the following line

alias net-pf-10 ipv6

Replace it with the following

alias net-pf-10 off
alias ipv6 off

You can now remove all the ipv6 stuff from /etc/hosts and once you reboot ipv6 will be disabled

Tuts4Tech » ipv4

Set Preference for IPv4 over IPv6 on Windows 7

Disabling IPV6 on Debian