I'm attempting to run OpenSWAN on my Ubuntu11.10 server. All I've done so far is install openswan from the package manager and attempt to set up conf files. However, IPSec support seems to be broken, thus OpenSWAN can't do it's thing.

Attempt to start IPSec

$ sudo ipsec setup --start
ipsec_setup: Starting Openswan IPsec 2.6.28...
ipsec_setup: No KLIPS support found while requested, desperately falling back to netkey
ipsec_setup: Even NETKEY support is not there, aborting

Verify IPSec

$ sudo ipsec verify
Checking your system to see if IPsec got installed and started correctly:
Version check and ipsec on-path                                 [OK]
Linux Openswan U2.6.28/K(no kernel code presently loaded)
Checking for IPsec support in kernel                            [FAILED]
Checking that pluto is running                                  [FAILED]
  whack: Pluto is not running (no "/var/run/pluto/pluto.ctl")
Checking for 'ip' command                                       [OK]
Checking for 'iptables' command                                 [OK]
Opportunistic Encryption Support                                [DISABLED]

IPSec Version

$ sudo ipsec version
Linux Openswan U2.6.28/K(no kernel code presently loaded)
See `ipsec --copyright' for copyright information.

Linux build:

$ uname -a  
Linux metabox 2.6.18-028stab092.1 #1 SMP Wed Jul 20 19:47:12 MSD 2011 x86_64 x86_64 x86_64 GNU/Linux

How can I go about correcting this problem with IPSec? This is a hosted VPS, and I'd like to avoid a kernel rebuild if I can find some other alternative.