Subject: Re: [PATCH net-next 1/2] Support outside netns for tunnels.

From: Nicolas Dichtel <[email-masked]>
Date: Tue, 5 Jan 2016 17:47:09 +0100

Le 04/01/2016 19:45, Saurabh Mohan a écrit :
>
> This patch enchances a tunnel interface, like gre, to have the tunnel
> encap/decap be in the context of a network namespace that is different from
> the namespace of the tunnel interface.
>
>  From userspace this feature may be configured using the new 'onetns' keyword:
> ip netns exec custa ip link add dev tun1 type gre local 10.0.0.1 \
>   remote 10.0.0.2 onetns outside
>
> In the above example the tunnel would be in the 'custa' namespace and the
> tunnel endpoints would be in the 'outside' namespace.
What is the difference with the following commands?

ip netns exec outside ip link add dev tun1 type gre local 10.0.0.1 \
    remote 10.0.0.2
ip netns exec outside ip link set tun1 netns custa

or

ip exec custa ip netns set outside 1234
ip exec custa ip link add tun1 link-netnsid 1234 type gre local 10.0.0.1 \
    remote 10.0.0.2

Regards,
Nicolas