Sipp

disable IP6

To check if IPv6 is disabled, run the following command:

cat /proc/sys/net/ipv6/conf/all/disable_ipv6

0 means it's enabled and 1 - disabled.

Basically, to disable IPv6 in Ubuntu 10.04 Lucid Lynx, you have to add the following lines to /etc/sysctl.conf:

    #disable ipv6
    net.ipv6.conf.all.disable_ipv6 = 1
    net.ipv6.conf.default.disable_ipv6 = 1
    net.ipv6.conf.lo.disable_ipv6 = 1

To do it from the command line, paste this in a terminal:

echo "#disable ipv6" | sudo tee -a /etc/sysctl.conf
echo "net.ipv6.conf.all.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
echo "net.ipv6.conf.default.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
echo "net.ipv6.conf.lo.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf

Then reboot and check if IPv6 has been disabled with the previous cat command.

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