Пытаюсь поднять на сервере VPN для использования на iPhone.
С ipsec вроде бы проблем нет, при подключении с iPhone выдается ошибка "Сервер L2TP-VPN yе ответил".
Привожу логи, помогите разобраться

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/K3.8.0-25-generic (netkey)
Checking for IPsec support in kernel                            [OK]
 SAref kernel support                                           [N/A]
 NETKEY:  Testing XFRM related proc values                      [OK]
    [OK]
    [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]

tail -f /var/log/auth.log
Aug 26 12:36:14 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #4:   them: 100.100.100.100[200.200.200.200]:17/58800===192.168.3.68/32
Aug 26 12:36:14 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #4: transition from state STATE_QUICK_R0 to state STATE_QUICK_R1
Aug 26 12:36:14 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #4: STATE_QUICK_R1: sent QR1, inbound IPsec SA installed, expecting QI2
Aug 26 12:36:14 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #4: transition from state STATE_QUICK_R1 to state STATE_QUICK_R2
Aug 26 12:36:14 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #4: STATE_QUICK_R2: IPsec SA established transport mode {ESP=>0x076951f4 <0x4a0caf89 xfrm=AES_128-HMAC_SHA1 NATOA=192.168.3.68 NATD=100.100.100.100:4500 DPD=none}
Aug 26 12:36:34 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #3: received Delete SA(0x076951f4) payload: deleting IPSEC State #4
Aug 26 12:36:34 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #3: received and ignored informational message
Aug 26 12:36:34 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100 #3: received Delete SA payload: deleting ISAKMP State #3
Aug 26 12:36:34 Ubuntu-1304-raring-32-minimal pluto[955]: "L2TP-PSK-NAT"[4] 100.100.100.100: deleting connection "L2TP-PSK-NAT" instance with peer 100.100.100.100 {isakmp=#0/ipsec=#0}
Aug 26 12:36:34 Ubuntu-1304-raring-32-minimal pluto[955]: packet from 100.100.100.100:4500: received and ignored informational message

tail -f /var/log/syslog
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1530]: Enabling IPsec SAref processing for L2TP transport mode SAs
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1530]: IPsec SAref does not work with L2TP kernel mode yet, enabling forceuserspace=yes
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1530]: setsockopt recvref[30]: Protocol not available
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1530]: This binary does not support kernel L2TP.
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1531]: xl2tpd version xl2tpd-1.3.1 started on Ubuntu-1304-raring-32-minimal PID:1531
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1531]: Written by Mark Spencer, Copyright (C) 1998, Adtran, Inc.
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1531]: Forked by Scott Balmos and David Stipp, (C) 2001
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1531]: Inherited by Jeff McAdams, (C) 2002
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1531]: Forked again by Xelerance (www.xelerance.com) (C) 2006
Aug 26 12:39:55 Ubuntu-1304-raring-32-minimal xl2tpd[1531]: Listening on IP address 0.0.0.0, port 1701

[global]
ipsec saref = yes
debug tunnel = yes
debug avp = yes
debug network = yes
debug packet = yes
debug state = yes
;force userspace =yes
[lns default]
ip range = 10.0.7.40-10.0.7.50
local ip = 10.0.7.2
assign ip = yes
require chap = yes
refuse pap = yes
require authentication = yes
name = l2tpd
ppp debug = yes
pppoptfile = /etc/ppp/options.xl2tpd
length bit = yes