Disable IPv6 in Ubuntu 8.04

Some may find that out-of-the-box, Hardy Heron’s network performance is painfully slow. By default, IPv6 is enabled, and chances are good that your nearest router can’t speak the language nor interpret DNS requests efficiently.

To disable IPv6, open a shell and append the following to /etc/modprobe.d/blacklist:

# disable ipv6
blacklist ipv6


To verify that IPv6 is disabled, run

lsmod | grep ipv6


ip a | grep inet6

The commands shouldn’t return any information. Firefox browsing speeds should be much improved.


About Benjamin Perove

Benjamin has been associated with computer technology starting from a very early age, and has contributed to the success of many businesses and enterprises since 2001. He loves to crush pow at Keystone, play acoustic guitar, climb rocks, and ascend mountains on his road bike. Benjamin is an Avalanche fan and currently resides in Boulder, Colorado.

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