IPv6 only configuration
 

Hi,

I am running an application that can work in both environments, IPv4 and IPv6. What I want to test is that if it works in an IPv6 environment only, so I need to deactivate the IPv4. I think I made it works with the eth0 interface but I cant manage to do the same with the loopback interface. Each time I restart the network adapters the lo IP address cames back even after removing the IPv4 value from the ifcfg-lo and adding the IPv6 one. What I finally try after going around is to remove the IPv4 address manually after restarting the network adapters. It worked but when I run my application, it can still create IPv4 sockets.

I run out of ideas so any help will be helpfull.

Kind regards,

Ruben

You will probably have to recompile the kernel to remove IPv4 support completely.

If you decide to do that, make sure you install the new kernel as a separate boot option in addition to the kernel you're currently using.

Thanks. That was what I though after looking around for two days.

Why don't you just block lo using iptables, and open up in ip6tables.

Mike