Disabling ipv6 in Ubuntu

Installed netbeans on my Ubuntu 11.04 and it was failing to connect and install updates. Disabling ipv6 solved the issue.

Check status of ipv6
Terminal:

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

0 means it's enabled and 1 - disabled

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

Done. Restart and check status of ipv6 again.

Cheers

Bhushan