[strongSwan] Passthrough Connection

Christian Hanster christian-hanster at gmx.de
Fri Sep 4 17:38:47 CEST 2015

Hi Noel,

unfortunately I cannot stop using overlapping subnets because the idea is to route the whole internet traffic. I only took other subnets to reduce the complexity a little bit. Actually I have now taken the log a little bit under investigation and it seems that the passthrough-connection is not installed right: 
received stroke: add connection 'passthrough'
Sep  4 17:15:26 pceapu-2 charon: 09[CFG] left nor right host is our side, assuming left=local
Sep  4 17:15:26 pceapu-2 charon: 09[CFG] added configuration 'passthrough'
Sep  4 17:15:26 pceapu-2 charon: 10[CFG] received stroke: route 'passthrough'
Sep  4 17:15:26 pceapu-2 charon: 10[KNL] unable to install source route for

What I do not understand is, why it is not possible to determine our side because there is only one interface with What I now take to consideration is that perhaps strongswan cannot handle this new naming of interfaces. On this router the interfaces are named like p4p1 and p5p1. That I actually do not know. Do you know more? 

OS: Ubuntu 14.04 and strongswan 5.1.2.

Kind regards or viele Grüße :) 
Christian Hanster
> On 03 Sep 2015, at 21:17, Noel Kuntze <noel at familie-kuntze.de> wrote:
> Hash: SHA256
> Hello Christian,
> Make sure that any NAT rules don't break the tunnel,
> that your routes on any hosts don't route traffic anywhere else
> and stop using overlapping subnets, if you can.
> - -- 
> Mit freundlichen Grüßen/Kind Regards,
> Noel Kuntze
> GPG Key ID: 0x63EC6658
> Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658
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> =onju

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