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Date:   Mon, 20 Jan 2020 11:47:40 +0000
From:   Tom Parkin <tparkin@...alix.com>
To:     Guillaume Nault <gnault@...hat.com>
Cc:     Ridge Kennedy <ridge.kennedy@...iedtelesis.co.nz>,
        netdev@...r.kernel.org
Subject: Re: [PATCH net] l2tp: Allow duplicate session creation with UDP

On  Sat, Jan 18, 2020 at 18:52:24 +0100, Guillaume Nault wrote:
> On Fri, Jan 17, 2020 at 07:29:12PM +0000, Tom Parkin wrote:
> > On  Fri, Jan 17, 2020 at 17:36:27 +0100, Guillaume Nault wrote:
> > > To summarise, my understanding is that global session IDs would follow
> > > the spirit of RFC 3931 and would allow establishing multiple L2TPv3
> > > connections (tunnels) over the same 5-tuple (or 3-tuple for IP encap).
> > > Per socket session IDs don't, but would allow fixing Ridge's case.
> > 
> > I'm not 100% certain what "per socket session IDs" means here.  Could
> > you clarify?
> > 
> By "per socket session IDs", I mean that the session IDs have to be
> interpreted in the context of their parent tunnel socket (the current
> l2tp_udp_recv_core() approach). That's opposed to "global session IDs"
> which have netns-wide significance (the current l2tp_ip_recv()
> approach).
>

OK, thanks for confirming.

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