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

Issue

How to Disable And Enable IPv6 In Netwitness11.x Hosts?

Resolution

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

          

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