[strongSwan] Net to net double nat problem

[Tobias Brunner]

Hi,

>       children {
>          net {
>             local_ts = 172.28.10.0/24
>            
>             if_id_out = 42
>             if_id_in = 42
>          }
>       }
> ...
> charon-systemd[134046]: traffic selectors 5.2.2.2.2/32 ===
> 192.168.0.2/32 unacceptable

You haven't specified a remote traffic selector, so it defaults to the
public remote IP address.  Since the responder apparently used its
private IP as traffic selector that won't match.  You'll probably want
to configure the remote traffic selector explicitly (remote_ts).

Regards,
Tobias