000035820 - How to enable and disable IPv6 on RSA NetWitness Logs & Network 11.x hosts

Here are the steps to disable IPv6 in RSA NetWitness Logs & Packets hosts.
     
Method 1: 

1. Edit file /etc/sysctl.conf
    
   

   
   vi /etc/sysctl.conf

   
   
2. Add the following lines:
    
   

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

   
   
   

             
    

   
   
3. Save and exit the file.
4. Execute the following command to reflect the changes. 
   

   
   sysctl -p

   
   
   

             
              To re-enable IPv6, remove the above lines from /etc/sysctl.conf and reboot the machine.
   
    Method 2:
   
      1. To disable IPv6 in a running system, enter the following commands one by one:         

   
   
   

   
   sysctl -w net.ipv6.conf.all.disable_ipv6=1
    sysctl -w net.ipv6.conf.default.disable_ipv6=1

   
   
   

          

   
   
   

      OR 

   
   
   

   
   echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6
   echo 1 > /proc/sys/net/ipv6/conf/default/disable_ipv6                       

   
   
   

          
   
      2. To enable IPv6 on a running system, enter the following commands one by one:

   
   
   

   
   sysctl -w net.ipv6.conf.all.disable_ipv6=0
   sysctl -w net.ipv6.conf.default.disable_ipv6=0

   
   
   

         
   
      OR 

   
   
   

   
   echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6
   echo 0 > /proc/sys/net/ipv6/conf/default/disable_ipv6