Subject: Re: How to identify 6to4 and 6in4 tunnels

From: Nicolas Dichtel <[email-masked]>
Date: Mon, 27 Jan 2014 13:59:03 +0100

Le 27/01/2014 11:39, zhuyj a écrit :
> Hi, Maintainers
>
> In our scene, we will create the 6in4/6to4 tunnel firstly and need to check the
> tunnel type, secondly, we will configure the ip address on it. So, Could we have
> any way to get the actual tunnel for 6in4 and 6to4 from current linux version?
>
> Both 6in4 and 6to4 have the same protocol “IPPROTO_IPV6” in Linux kernel. The
> only difference is the ip address on the tunnel. Can we distinguish them in
> Linux kernel?
Just check the prefix, like it is done in check_6rd().

Regards,
Nicolas