[Swan] IPsec tunnel ping succedes only initially

Paul Wouters paul at nohats.ca
Thu Feb 14 03:41:43 UTC 2019

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.


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