IPSec/L2TP with pfSense 2.2

MikeV7896

No change. TCP still being blocked, while UDP and ICMP go just fine.

AndrewZ

virgiliomi,
you're still more lucky than me :)
I do not even see l2tp in the firewall log. Could you please share your working config not hiding the private addresses you use.
Thanks!

MikeV7896

Basically, I followed themaninblack's config from earlier in this thread. The only changes I made are…

Phase 1 Algorithms:
Encryption: AES 256
Hash: SHA1
DH key group: 2 (1024 bit)

Phase 2 Proposal:
Encryption: Only AES checked, 256 bit selected
Hash: Only SHA1 checked

The IP Addresses I used in L2TP settings are a subset of my LAN subnet, just as mentioned by themaninblack. My LAN is 192.168.1.1/24, my L2TP is 192.168.1.208/29 and my server address is 192.168.1.216. If I use addresses outside of my LAN subnet (i.e. 192.168.51.208/29 and 192.168.51.216) then I get ping responses, but no TCP or UDP traffic (so no DNS).

jimp

Looks like the rules are somehow not matching as expected. Maybe inbound L2TP traffic is actually bypassing pf and not receiving a state?

If you add a Floating rule (quick=checked, dir=out, interface=l2tp, source=any, destination=any, TCP Flags=Any Flags, State Type=Sloppy State) it works.

MikeV7896

Yep, that rule definitely fixed it for me. Works much better now!

jimp

For those having trouble getting it going, I started from scratch and got this to work, pfSense 2.2 vs Windows 8.1 client:

https://doc.pfsense.org/index.php/L2TP/IPsec

AndrewZ

OK, I've deleted my previous config and followed the guide. Result is the same:
IPSec:

Jan 21 01:57:26 	charon: 08[KNL] 192.168.32.1 appeared on l2tp0
Jan 21 01:57:26 	charon: 08[KNL] interface l2tp0 activated

L2TP:

Jan 21 01:57:26 	l2tps: [l2tp0] rec'd unexpected protocol IP
Jan 21 01:57:26 	l2tps: [l2tp0] no interface to proxy arp on for 192.168.32.128
Jan 21 01:57:26 	l2tps: [l2tp0] IFACE: Up event
Jan 21 01:57:26 	l2tps: 192.168.32.1 -> 192.168.32.128
Jan 21 01:57:26 	l2tps: [l2tp0] IPCP: LayerUp
Jan 21 01:57:26 	l2tps: [l2tp0] IPCP: state change Ack-Rcvd --> Opened
Jan 21 01:57:26 	l2tps: PRIDNS 192.168.5.1
Jan 21 01:57:26 	l2tps: IPADDR 192.168.32.128
Jan 21 01:57:26 	l2tps: [l2tp0] IPCP: SendConfigAck #3
Jan 21 01:57:26 	l2tps: PRIDNS 192.168.5.1
Jan 21 01:57:26 	l2tps: 192.168.32.128 is OK
Jan 21 01:57:26 	l2tps: IPADDR 192.168.32.128

Nothing in firewall log, cannot access LAN. Tested from iPad. pfsense on nanobsd.

Ocid

I managed to get a connection and I'm able to browse LAN and internet from my iPhone (iOS 8.1.2) by following that guide, but I had to make the following modifications:

IPsec Phase 1:

DH key group: 2 (1024)

~~Firewall - Rules, WAN tab

see attached pic~~
(works without these rules)

Services - DNS Resolver - Access Lists

allow 192.168.32.128/25

![Screenshot 2015-01-21 12.32.19.png](/public/imported_attachments/1/Screenshot 2015-01-21 12.32.19.png)
![Screenshot 2015-01-21 12.32.19.png_thumb](/public/imported_attachments/1/Screenshot 2015-01-21 12.32.19.png_thumb)

jimp

@Ocid:

I managed to get a connection and I'm able to browse LAN and internet from my iPhone (iOS 8.1.2) by following that guide, but I had to make the following modifications:

I added those notes to https://doc.pfsense.org/index.php/L2TP/IPsec

jimp

@AndrewZ:

Nothing in firewall log, cannot access LAN. Tested from iPad. pfsense on nanobsd.

What version of iOS? If you see anything at all in the L2TP log then the IPsec portion must be OK.

dstroot

Services - DNS Resolver - Access Lists

allow 192.168.32.128/25

This might be my issue - none of the guides I have seen so far have mentioned anything about DNS resolver…

AndrewZ

@jimp:

What version of iOS? If you see anything at all in the L2TP log then the IPsec portion must be OK.

iOS 8.1.2
I mean the Firewall log has no records related to L2TP, but I do have something in both IPsec and L2TP logs, I mentioned this earlier in this thread.
Could it be related to nanobsd build?

jimp

Not likely related to NanoBSD, but it could be related to the client configuration and/or L2TP settings. I don't have any devices with iOS 7.x or 8.x to test. I could try 6.x but that may have other unrelated issues.

AndrewZ

I don't think the client is guilty… I will try to find another client to test. This error - [l2tp0] no interface to proxy arp on for 192.168.32.128' - make me suspicious regarding the L2TP server config or behavior.

Daemon is started as follows:
/usr/local/sbin/mpd4 -b -d /var/etc/l2tp-vpn -p /var/run/l2tp-vpn.pid -s l2tps l2tps

Configuration file /var/etc/l2tp-vpn/mpd.conf


l2tps:
	load l2tp0
	load l2tp1
	load l2tp2
	load l2tp3
	load l2tp4
	load l2tp5
	load l2tp6
	load l2tp7

l2tp0:
	new -i l2tp0 l2tp0 l2tp0
	set ipcp ranges 192.168.32.1/32 192.168.32.128/32
	load l2tp_standard

l2tp1:
	new -i l2tp1 l2tp1 l2tp1
	set ipcp ranges 192.168.32.1/32 192.168.32.129/32
	load l2tp_standard

l2tp2:
	new -i l2tp2 l2tp2 l2tp2
	set ipcp ranges 192.168.32.1/32 192.168.32.130/32
	load l2tp_standard

l2tp3:
	new -i l2tp3 l2tp3 l2tp3
	set ipcp ranges 192.168.32.1/32 192.168.32.131/32
	load l2tp_standard

l2tp4:
	new -i l2tp4 l2tp4 l2tp4
	set ipcp ranges 192.168.32.1/32 192.168.32.132/32
	load l2tp_standard

l2tp5:
	new -i l2tp5 l2tp5 l2tp5
	set ipcp ranges 192.168.32.1/32 192.168.32.133/32
	load l2tp_standard

l2tp6:
	new -i l2tp6 l2tp6 l2tp6
	set ipcp ranges 192.168.32.1/32 192.168.32.134/32
	load l2tp_standard

l2tp7:
	new -i l2tp7 l2tp7 l2tp7
	set ipcp ranges 192.168.32.1/32 192.168.32.135/32
	load l2tp_standard

l2tp_standard:
	set bundle disable multilink
	set bundle enable compression
	set bundle yes crypt-reqd
	set ipcp yes vjcomp
	# set ipcp ranges 131.188.69.161/32 131.188.69.170/28
	set ccp yes mppc
	set iface disable on-demand
	set iface enable proxy-arp
	set iface up-script /usr/local/sbin/vpn-linkup
	set iface down-script /usr/local/sbin/vpn-linkdown
	set link yes acfcomp protocomp
	set link no pap chap
	set link enable chap
	set link keep-alive 10 180
	set ipcp dns 192.168.5.1

jimp

@AndrewZ:

I don't think the client is guilty… I will try to find another client to test. This error - [l2tp0] no interface to proxy arp on for 192.168.32.128' - make me suspicious regarding the L2TP server config or behavior.

That is normal. It only comes into play if you make the client subnet overlap another interface such as LAN, the firewall will proxy arp for the overlapping addresses so the clients can function. It's not related to any problem.

robertwh

Guys,
I have been playing with the lastest build and trying to get the this to work.

This is the logs i get when trying to connect using windows 7.
According to the Ipsec logs I get this far and it just fails to connect
Jan 22 03:50:05 charon: 09[IKE] <con1|24>CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 03:50:05 charon: 09[IKE] CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]

If i connect using my iphone 6
it connects and gets a proper ip address.
I can ping the phone from my network but cannot connect anywhere from the phone (dns names or ip addresses)

I found an articale why windows may not be connecting but haven't had any luck getting it to work.

AssumeUDPEncapsulationContextOnSendRule

http://support2.microsoft.com/?kbid=947234

It appears to be valid for windows Vista - 8</con1|24>

jimp

@robertwh:

Jan 22 03:50:05 charon: 09[IKE] <con1|24>CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 03:50:05 charon: 09[IKE] CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]</con1|24>

That means the IPsec portion connected. From there, look in the L2TP settings/logs.

robertwh

I don't think the IPSEC tunnel is completly working though.
I suspect it may be NAT-T related

On the windows client it connects but never gets to the L2TP connection. It generates these logs and then drops with a 809 error.


Jan 22 09:13:19	charon: 09[IKE] <con1|27>closing CHILD_SA con1{27} with SPIs cb8d4f49_i (774 bytes) c223e6e8_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 09:13:19	charon: 09[IKE] closing CHILD_SA con1{27} with SPIs cb8d4f49_i (774 bytes) c223e6e8_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 09:13:19	charon: 15[IKE] <con1|27>Hash => 20 bytes @ 0x80d545540
Jan 22 09:13:19	charon: 15[IKE] <con1|27>0: 00 F2 7E 7F 5D 3A C0 86 3F D1 78 60 08 82 8B 6C ..~.]:..?.x`...l
Jan 22 09:13:19	charon: 15[IKE] <con1|27>16: C8 DD FE 22 ..."
Jan 22 09:13:19	charon: 15[IKE] Hash => 20 bytes @ 0x80d545540
Jan 22 09:13:19	charon: 15[IKE] 0: 00 F2 7E 7F 5D 3A C0 86 3F D1 78 60 08 82 8B 6C ..~.]:..?.x`...l
Jan 22 09:13:19	charon: 15[IKE] 16: C8 DD FE 22 ..."
Jan 22 09:13:19	charon: 15[IKE] <con1|27>received DELETE for IKE_SA con1[27]
Jan 22 09:13:19	charon: 15[IKE] received DELETE for IKE_SA con1[27]
Jan 22 09:13:19	charon: 15[IKE] <con1|27>deleting IKE_SA con1[27] between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 09:13:19	charon: 15[IKE] deleting IKE_SA con1[27] between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 09:13:19	charon: 15[IKE] <con1|27>IKE_SA con1[27] state change: ESTABLISHED => DELETING
Jan 22 09:13:19	charon: 15[IKE] IKE_SA con1[27] state change: ESTABLISHED => DELETING
Jan 22 09:13:19	charon: 15[IKE] <con1|27>IKE_SA con1[27] state change: DELETING => DELETING
Jan 22 09:13:19	charon: 15[IKE] IKE_SA con1[27] state change: DELETING => DELETING
Jan 22 09:13:19	charon: 15[IKE] <con1|27>IKE_SA con1[27] state change: DELETING => DESTROYING
Jan 22 09:13:19	charon: 15[IKE] IKE_SA con1[27] state change: DELETING => DESTROYING</con1|27></con1|27></con1|27></con1|27></con1|27></con1|27></con1|27></con1|27></con1|27>

robertwh

Here is the complete log when the ipsec established but i see nothing on the l2tp side.

I have tried setting the NAT-T to force and auto.


Last 500 IPsec log entries
Jan 22 10:21:32	charon: 16[IKE] received MS NT5 ISAKMPOAKLEY vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> received NAT-T (RFC 3947) vendor ID
Jan 22 10:21:32	charon: 16[IKE] received NAT-T (RFC 3947) vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
Jan 22 10:21:32	charon: 16[IKE] received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> received FRAGMENTATION vendor ID
Jan 22 10:21:32	charon: 16[IKE] received FRAGMENTATION vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> 68.196.152.146 is initiating a Main Mode IKE_SA
Jan 22 10:21:32	charon: 16[IKE] 68.196.152.146 is initiating a Main Mode IKE_SA
Jan 22 10:21:32	charon: 16[IKE] <40> remote host is behind NAT
Jan 22 10:21:32	charon: 16[IKE] remote host is behind NAT
Jan 22 10:21:32	charon: 16[IKE] <con1|40>IKE_SA con1[40] established between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 10:21:32	charon: 16[IKE] IKE_SA con1[40] established between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 10:21:32	charon: 16[IKE] <con1|40>DPD not supported by peer, disabled
Jan 22 10:21:32	charon: 16[IKE] DPD not supported by peer, disabled
Jan 22 10:21:32	charon: 07[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 07[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 07[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 07[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 07[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c2ac3083_i 791710e4_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 07[IKE] CHILD_SA con1{40} established with SPIs c2ac3083_i 791710e4_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 09[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 09[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 09[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 09[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 09[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:32	charon: 09[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:32	charon: 07[IKE] <con1|40>CHILD_SA con1{40} established with SPIs ce98b678_i f53a2b36_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 07[IKE] CHILD_SA con1{40} established with SPIs ce98b678_i f53a2b36_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 14[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI 791710e4
Jan 22 10:21:32	charon: 14[IKE] received DELETE for ESP CHILD_SA with SPI 791710e4
Jan 22 10:21:32	charon: 14[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c2ac3083_i (0 bytes) 791710e4_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 14[IKE] closing CHILD_SA con1{40} with SPIs c2ac3083_i (0 bytes) 791710e4_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 14[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:35	charon: 14[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:35	charon: 14[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:35	charon: 14[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:35	charon: 14[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:35	charon: 14[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:35	charon: 14[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c51633fb_i ca4d941f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 14[IKE] CHILD_SA con1{40} established with SPIs c51633fb_i ca4d941f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 16[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI f53a2b36
Jan 22 10:21:35	charon: 16[IKE] received DELETE for ESP CHILD_SA with SPI f53a2b36
Jan 22 10:21:35	charon: 16[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs ce98b678_i (0 bytes) f53a2b36_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 16[IKE] closing CHILD_SA con1{40} with SPIs ce98b678_i (0 bytes) f53a2b36_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 16[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:39	charon: 16[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:39	charon: 16[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:39	charon: 16[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:39	charon: 16[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:39	charon: 16[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:39	charon: 16[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c0f69931_i fff6c3f5_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 16[IKE] CHILD_SA con1{40} established with SPIs c0f69931_i fff6c3f5_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 10[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI ca4d941f
Jan 22 10:21:39	charon: 10[IKE] received DELETE for ESP CHILD_SA with SPI ca4d941f
Jan 22 10:21:39	charon: 10[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c51633fb_i (0 bytes) ca4d941f_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 10[IKE] closing CHILD_SA con1{40} with SPIs c51633fb_i (0 bytes) ca4d941f_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 10[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:47	charon: 10[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:47	charon: 10[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:47	charon: 10[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:47	charon: 10[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:47	charon: 10[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:47	charon: 10[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c9cfefb5_i 4d93f9c0_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 10[IKE] CHILD_SA con1{40} established with SPIs c9cfefb5_i 4d93f9c0_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 07[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI fff6c3f5
Jan 22 10:21:47	charon: 07[IKE] received DELETE for ESP CHILD_SA with SPI fff6c3f5
Jan 22 10:21:47	charon: 07[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c0f69931_i (0 bytes) fff6c3f5_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 07[IKE] closing CHILD_SA con1{40} with SPIs c0f69931_i (0 bytes) fff6c3f5_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 07[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:57	charon: 07[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:57	charon: 07[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:57	charon: 07[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:57	charon: 07[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:57	charon: 07[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:57	charon: 07[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c13e2917_i d30e718f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 07[IKE] CHILD_SA con1{40} established with SPIs c13e2917_i d30e718f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 10[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI 4d93f9c0
Jan 22 10:21:57	charon: 10[IKE] received DELETE for ESP CHILD_SA with SPI 4d93f9c0
Jan 22 10:21:57	charon: 10[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c9cfefb5_i (0 bytes) 4d93f9c0_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 10[IKE] closing CHILD_SA con1{40} with SPIs c9cfefb5_i (0 bytes) 4d93f9c0_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]</con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40>

eri--

Probably you have to disable rekey on this tunnel.