How do I disable an IPv6 network connection and all its subsystem for my server? I'm having some problem with my GUI program under Debian "Squeeze", how can I disable IPv6?
The Internet Protocol version 6 can be disabled by removing kernel driver or module called ipv6. To disable the same just type the following command:
echo 'blacklist ipv6' >> /etc/modprobe.d/blacklist Simply reboot the box:
# rebootAlternatively you can use the ifconfig command to remove all ipv6 addressed assigned to your box. You also need to remove ipv6 gateway using the route command itself and finally use the rmmod command to remove ipv6 driver. This is useful if you don't want to reboot the box. Please note that eth0 connectivity will go down and you cannnot use the following commands over the ssh session:
# ifconfig down eth0
# route -A inet6 del {network6}/{prefixlength} gw {ipv6address} eth0
# lsmod | grep ipv6
# rmmod ipv6
# ifconfig eth0 up
#### or
# /etc/init.d/networking restart
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