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Date:   Mon, 5 Oct 2020 17:11:47 +0200
From:   Nicolas Dichtel <>
To:     Xin Long <>
Cc:     Steffen Klassert <>,
        David Miller <>,
        Herbert Xu <>,
        network dev <>
Subject: Re: [PATCH 10/19] xfrm: interface: support IP6IP6 and IP6IP tunnels
 processing with .cb_handler

Le 03/10/2020 à 11:41, Xin Long a écrit :
> When xfrmi processes the ipip packets, it does the state lookup and xfrmi
> device lookup both in xfrm_input(). When either of them fails, instead of
> returning err and continuing the next .handler in tunnel4_rcv(), it would
> drop the packet and return 0.
> It's kinda the same as xfrm_tunnel_rcv() and xfrm6_tunnel_rcv().
> So the safe fix is to lower the priority of xfrmi .handler but it should
> still be higher than xfrm_tunnel_rcv() and xfrm6_tunnel_rcv(). Having
> xfrmi loaded will only break IPCOMP, and it's expected. I'll post a fix:
Thanks. This patch fixes my test cases.


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