[strongSwan] Strongswan 4.5.1 IKE V2 - ip route result

[CETIAD - Fabrice Barconnière]

Hello,

I have two gateways with eth0 subnet address 192.168.10.0/25 and gateway 
address 192.168.10.1.

Amon:
eth0: 192.168.10.10/25
eth1: 10.21.11.1/24
eth2: 172.16.0.0/24
eth3: 10.121.11.1/24

Sphynx:
eth0: 192.168.10.5/25
eth1: 172.30.107.5/25
Other subnets via eth1 behind a router:
10.0.0.0/8
192.168.0.0/16
172.16.0.0/12

Amon gateway must access remote network 192.168.0.0/16 behind the other 
Sphynx gateway.

On Amon, when tunnels are up, "ip route get 192.168.10.1" command shows :
192.168.10.1 via 192.168.10.5 dev eth0  src 10.121.11.1
And internet access is impossible.

After setting down tunnel Amon_eth1 --- Sphynx_192.168.0.0/16, "ip route 
get 192.168.10.1" command shows :
192.168.10.1 dev eth0  src 192.168.10.10
And internet access is OK but the tunnel is down.

Is it possible to have this configuration ?
Or is it impossible for eth0 address to be included in a remote subnet ?
If it's possible to have eth0 network included in a remote subnet 
address how can we configure this ?
For information I use sqlite database.

Regards
Fabrice Barconnière
CETIAD
Rectorat de DIJON