[Openswan Users] Strange error on start: duplicate key '' in conn vpc-to-vpc while processing def vpc-to-vpc

AJ Bahnken aj.bahnken at procore.com
Wed Jun 1 15:05:39 EDT 2016

Hello everyone,

I've been trying to debug this problem for a while now. I have a fairly
simple Openswan setup based off of
http://aws.amazon.com/articles/5472675506466066 that I am trying to get
working. Annoyingly, when I originally went through this tutorial
everything worked as expected. Now that I've converted it into Puppet code,
I am getting a strange error that I can't seem to debug.

The error is:
ajvb at ip-10-0-0-1 ~$ sudo service ipsec restart
ipsec_setup: Stopping Openswan IPsec...
ipsec_setup: Starting Openswan IPsec U2.6.38/K3.13.0-85-generic...

*ipsec_setup: duplicate key '' in conn vpc-to-vpc while processing def
vpc-to-vpcipsec_setup: while loading 'vpc-to-vpc': duplicate key '' in conn
vpc-to-vpc while processing def vpc-to-vpc*

Config File (slightly sanitized):
ajvb at ip-10-0-0-1 ~$ cat /etc/ipsec.conf
version 2.0

config setup

conn vpc-to-vpc

System Information:
ajvb at ip-10-0-0-1 ~$ uname -a
Linux ip-10-0-0-1 3.13.0-85-generic #129-Ubuntu SMP Thu Mar 17 20:50:15 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
ajvb at ip-10-0-0-1 ~$ ipsec --version
Linux Openswan U2.6.38/K3.13.0-85-generic (netkey)

IPSec Verify:
sudo ipsec verify
Checking your system to see if IPsec got installed and started correctly:
Version check and ipsec on-path                                 [OK]
Linux Openswan U2.6.38/K3.13.0-85-generic (netkey)
Checking for IPsec support in kernel                            [OK]
 SAref kernel support                                           [N/A]
 NETKEY:  Testing XFRM related proc values                      [OK]
Checking that pluto is running                                  [OK]
 Pluto listening for IKE on udp 500                             [OK]
 Pluto listening for NAT-T on udp 4500                          [OK]
Checking for 'ip' command                                       [OK]
Checking /bin/sh is not /bin/dash                               [WARNING]
Checking for 'iptables' command                                 [OK]
Opportunistic Encryption Support                                [DISABLED]

I've seen this error referenced a few places online, but there isn't really
any discussion as to what causes it or how it was fixed.

Any help would be appreciated. Thanks!



*AJ Bahnken*
Site Reliability Engineer  |  *Procore*
6309 Carpinteria Ave  |  Carpinteria, CA 93013
aj.bahnken at procore.com  |  LinkedIn <https://www.linkedin.com/in/ajvbahnken>

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