[Swan] Lost IKEv1 connectivity after libreswan upgrade

Mirsad Goran Todorovac mirsad.todorovac at alu.hr
Wed Nov 24 21:25:19 EET 2021

Dear Mr. Wouters,

I have succeeded to connect with IKEv1 L2TP IPSEC w PSK from my laptop 
from home ethernet device.
Previous successful connect was also from this Windows 10 laptop.

The version of libreswan is 3.32:

root at domac:/etc/ipsec.d# ipsec version
Linux Libreswan 3.32 (netkey) on 4.19.0-17-amd64
root at domac:/etc/ipsec.d#

Now that I have v1 working, I will try to implement IKEv2 without pressure.

Thank you very much for all the help and the advice. I hope I could 
contact you again if there will be any problems.
I see that libreswan is a powerful tool. It only needs some 
autoconfiguration tool for the novice user, and it
will surely be more widely accepted.

Thank you again.

Kind regards,
Mirsad Todorovac

On 11/24/2021 4:56 PM, Mirsad Goran Todorovac wrote:
> It says: "CoId={95977531-E143-0004-FEC5-979543E1D701}: The user SYSTEM 
> dialed a connection named ALU VPN v1.1 which has failed. The error 
> code returned on failure is 789."
> But the connection to UniFi UDM-Pro L2TP IPSEC PSK VPN works ...
> Kind regards,
> Mirsad
> On 11/24/2021 4:54 PM, Paul Wouters wrote:
>> On Wed, 24 Nov 2021, Mirsad Goran Todorovac wrote:
>>> Dear Mr. Wouters,
>>> I was unsuccessful in trying to produce a VPN Client log.
>>> c:\ netsh trace start VpnClient per=yes maxsize=0 filemode=single
>>> produced a C:\Users\mtodo\AppData\Local\Temp\NetTraces\NetTrace.etl 
>>> log that requires PerfView and it
>>> is all Greek to me.
>>> C:\Windows\tracing\rasman.log is empty (size 0).
>>> Any idea? I'm on a Windows 10 Professional box.
>> Can you check the event viewer log ?
>> Paul
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