Re: [RFC net-next] ipv6: Support for anonymous tunnel decapsulation

Le 26/08/2021 à 18:23, Justin Iurman a écrit :

[snip]

quoted

quoted

Thoughts?

I'm not sure to understand why the current code isn't enough. The fallback
tunnels created by legacy IP tunnels drivers are able to receive and decapsulate
any encapsulated packets.

Because, right now, you need to use the ip6_tunnel module and explicitly configure a tunnel, as you described below. The goal of this patch is to provide a way to apply an ip6ip6 decapsulation *without* having to configure a tunnel.

What is the difference between setting a sysctl somewhere and putting an
interface up?