Linux - Disabling ipv6

disable-ipv6

Option A:

  sudo apt-get -o Acquire::ForceIPv4=true update
  
Option B:

1. Open Terminal

2. Enter sudo -H gedit /etc/sysctl.conf and open the configuration file and add the following lines at the end

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

After that run

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

If it reports '1' means you have disabled IPV6.

If it reports '0' then please follow Step 4 and Step 5.

4. Type command sudo sysctl -p. You will see this in terminal.

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

5. Repeat above "Step 3" and it will now report 1.