[strongSwan] Traffic in a Hub and Spoke setup not forwarded

Martin Sand dborn at gmx.net
Tue Nov 8 20:46:47 CET 2016

Hi all

I have a Hub and Spoke setup:
* Central server
* Router 1:
* Router 2:

I cannot reach the computers on the other side of the network although 
tunnel is established.
Do I miss an iptable or route information?

Output from when trying to reach a computer on the other 
network (
[user at workstation ~]$ tracepath
  1?: [LOCALHOST]                                         pmtu 1500
  1:  router-1                                     0.475ms
  1:  router-1                                     0.445ms
  2:  no reply

Output of route on Router 1 ( via dev eth0  proto static  src

Output of route on Router 2 ( via dev eth0  proto static  src

Any ideas on what is going wrong? Maybe because one router shows the 
external IP of the Hub instead of the internal one?

Best regards
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