So for now I have given my UTM a fixed IP-address and setup the modem to use that IP-addres as DMZ address.
After that only 1 of 3 IPSec connections came back up. The 2 not re-establishing are both UTM's using RSA authentication, the other one is a PSK site-to-site connection to a Sonicwall firewall device.
For now I was able to switch to SSL site-to-site for the other 2 connections, but I would rather switch back to IPSEC.
Here's part of the log file from one of these attempts (log file is from my own UTM)
2013:12:08-10:14:06 utm pluto[19106]: listening for IKE messages
2013:12:08-10:14:06 utm pluto[19106]: adding interface tun1/tun1 10.242.2.46:500
2013:12:08-10:14:06 utm pluto[19106]: adding interface tun1/tun1 10.242.2.46:4500
2013:12:08-10:14:06 utm pluto[19106]: forgetting secrets
2013:12:08-10:14:06 utm pluto[19106]: loading secrets from "/etc/ipsec.secrets"
2013:12:08-10:14:06 utm pluto[19106]: loaded PSK secret for 172.16.178.2 188.x.y.z
2013:12:08-10:14:06 utm pluto[19106]: forgetting secrets
2013:12:08-10:14:06 utm pluto[19106]: loading secrets from "/etc/ipsec.secrets"
2013:12:08-10:14:06 utm pluto[19106]: loaded PSK secret for 172.16.178.2 188.x.y.z
2013:12:08-10:14:06 utm pluto[19106]: loading ca certificates from '/etc/ipsec.d/cacerts'
2013:12:08-10:14:06 utm pluto[19106]: loaded ca certificate from '/etc/ipsec.d/cacerts/REF_CaSigVpnSigniCa.pem'
2013:12:08-10:14:06 utm pluto[19106]: loaded ca certificate from '/etc/ipsec.d/cacerts/REF_CaVerStartVerifCa2.pem'
2013:12:08-10:14:06 utm pluto[19106]: loaded ca certificate from '/etc/ipsec.d/cacerts/REF_CaVerStartVerifCa.pem'
2013:12:08-10:14:06 utm pluto[19106]: loading aa certificates from '/etc/ipsec.d/aacerts'
2013:12:08-10:14:06 utm pluto[19106]: loading ocsp certificates from '/etc/ipsec.d/ocspcerts'
2013:12:08-10:14:06 utm pluto[19106]: loading attribute certificates from '/etc/ipsec.d/acerts'
2013:12:08-10:14:06 utm pluto[19106]: Changing to directory '/etc/ipsec.d/crls'
2013:12:08-10:14:06 utm ipsec_starter[19100]: no default route - cannot cope with %defaultroute!!!
2013:12:08-10:14:06 utm pluto[19106]: added connection description "S_REF_IpsSitAceLummen_0"
2013:12:08-10:14:06 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: initiating Main Mode
2013:12:08-10:14:06 utm pluto[19106]: ERROR: "S_REF_IpsSitAceLummen_0" #77: sendto on eth1 to 81.x.y.z:500 failed in main_outI1. Errno 1: Operation not permitted
2013:12:08-10:14:06 utm pluto[19106]: added connection description "S_REF_IpsSitAceLummen_1"
2013:12:08-10:14:06 utm pluto[19106]: added connection description "S_REF_IpsSitAceLummen_2"
2013:12:08-10:14:16 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: received Vendor ID payload [strongSwan]
2013:12:08-10:14:16 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: ignoring Vendor ID payload [Cisco-Unity]
2013:12:08-10:14:16 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: received Vendor ID payload [XAUTH]
2013:12:08-10:14:16 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: received Vendor ID payload [Dead Peer Detection]
2013:12:08-10:14:16 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: received Vendor ID payload [RFC 3947]
2013:12:08-10:14:16 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: enabling possible NAT-traversal with method 3
2013:12:08-10:14:17 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: NAT-Traversal: Result using RFC 3947: i am NATed
2013:12:08-10:14:17 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: we don't have a cert
2013:12:08-10:14:17 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: ignoring informational payload, type INVALID_KEY_INFORMATION
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: ISAKMP version of ISAKMP Message has an unknown value: 0
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification INVALID_MAJOR_VERSION to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:24 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:25 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:26 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: discarding duplicate packet; already STATE_MAIN_I3
2013:12:08-10:14:27 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: next payload type of ISAKMP Hash Payload has an unknown value: 85
2013:12:08-10:14:27 utm pluto[19106]: "S_REF_IpsSitAceLummen_0" #77: malformed payload in packet
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:27 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: length of ISAKMP Message is smaller than minimum
2013:12:08-10:14:28 utm pluto[19106]: packet from 81.x.y.z:4500: sending notification PAYLOAD_MALFORMED to 81.x.y.z:4500
etc.
etc.
Someone a clue on how I could make this work again?
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