[Swan] IPsec tunnel ping succedes only initially

[Paul Wouters]

On Thu, 14 Feb 2019, Matteo Centonza wrote:

> i'm trying to establish a stable ipsec tunnel between an aws vpc and my home lab.
> 
> I've configured a centos 7.6 machine with libreswan-3.25.4-1 in ec2 and i'm using a vodafone modem as
> client (total blackbox).
> 
> IPsec tunnel starts just fine,  but often ping timeouts after first successful packet and i need to
> restart connection. I've tried to play with several options (including mtu changes) but without luck.
> 
> Does this rings any bell?

No that sounds odd. check the logs to see if the tunnel is continiously
restarted or if the pluto daemon is crashing on either end.

Paul