I have Debian 10 Buster with KDE Plasma 5.14.5 and kernel 5.6.0-0.bpo.2-amd64. I am trying to connect to VPN L2TP over IPSec. However, when I try to connect, an error occurs with no apparent reason. It states that fatal signal 15 has occured, but no additional information is given:
Aug 3 15:22:53 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: death_handler: Fatal signal 15 received I would really appreciate some help with the matter.
/var/log/syslog:
Aug 3 15:22:35 ComputerOfLiza NetworkManager[627]: <info> [1596457355.6103] audit: op="connection-activate" uuid="8313482f-d2cd-4e39-a18c-86b540d6a8e3" name="Work" pid=990 uid=1000 result="success" Aug 3 15:22:35 ComputerOfLiza NetworkManager[627]: <info> [1596457355.6209] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: Started the VPN service, PID 1922 Aug 3 15:22:35 ComputerOfLiza NetworkManager[627]: <info> [1596457355.6283] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: Saw the service appear; activating connectio n Aug 3 15:22:35 ComputerOfLiza NetworkManager[627]: <info> [1596457355.6332] audit: op="statistics" arg="refresh-rate-ms" pid=990 uid=1000 result="success" Aug 3 15:22:35 ComputerOfLiza nm-l2tp-service[1922]: Check port 1701 Aug 3 15:22:35 ComputerOfLiza nm-l2tp-service[1922]: Can't bind to port 1701 Aug 3 15:22:35 ComputerOfLiza NetworkManager[1941]: Stopping strongSwan IPsec... Aug 3 15:22:35 ComputerOfLiza charon: 00[DMN] signal of type SIGINT received. Shutting down Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[DMN] Starting IKE charon daemon (strongSwan 5.7.2, Linux 5.6.0-0.bpo.2-amd64, x86_64) Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] loading ca certificates from '/etc/ipsec.d/cacerts' Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] loading aa certificates from '/etc/ipsec.d/aacerts' Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] loading ocsp signer certificates from '/etc/ipsec.d/ocspcerts' Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] loading attribute certificates from '/etc/ipsec.d/acerts' Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] loading crls from '/etc/ipsec.d/crls' Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] loading secrets from '/etc/ipsec.secrets' Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] expanding file expression '/var/lib/strongswan/ipsec.secrets.inc' failed Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[CFG] expanding file expression '/etc/ipsec.d/*.secrets' failed Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[LIB] loaded plugins: charon aesni aes rc2 sha2 sha1 md5 mgf1 random nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp dnskey sshkey pe m openssl fips-prf gmp agent xcbc hmac gcm attr kernel-netlink resolve socket-default connmark stroke updown counters Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[LIB] dropped capabilities, running as uid 0, gid 0 Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[JOB] spawning 16 worker threads Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 08[KNL] interface wlp0s20f3 deactivated Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 12[KNL] interface wlp0s20f3 activated Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 08[KNL] interface wlp0s20f3 deactivated Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 12[KNL] interface wlp0s20f3 activated Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 13[KNL] interface wlp0s20f3 deactivated Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 06[KNL] interface wlp0s20f3 activated Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 07[KNL] fe80::42e7:d46c:adef:f62f appeared on wlp0s20f3 Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 13[KNL] 192.168.1.38 appeared on wlp0s20f3 Aug 3 15:22:35 ComputerOfLiza ipsec[822]: 00[DMN] signal of type SIGINT received. Shutting down Aug 3 15:22:35 ComputerOfLiza ipsec[796]: charon stopped after 200 ms Aug 3 15:22:35 ComputerOfLiza ipsec[796]: ipsec starter stopped Aug 3 15:22:35 ComputerOfLiza systemd[1]: strongswan.service: Succeeded. Aug 3 15:22:37 ComputerOfLiza NetworkManager[1938]: Starting strongSwan 5.7.2 IPsec [starter]... Aug 3 15:22:37 ComputerOfLiza NetworkManager[1938]: Loading config setup Aug 3 15:22:37 ComputerOfLiza NetworkManager[1938]: Loading conn '8313482f-d2cd-4e39-a18c-86b540d6a8e3' Aug 3 15:22:37 ComputerOfLiza NetworkManager[1938]: found netkey IPsec stack Aug 3 15:22:37 ComputerOfLiza charon: 00[DMN] Starting IKE charon daemon (strongSwan 5.7.2, Linux 5.6.0-0.bpo.2-amd64, x86_64) Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loading ca certificates from '/etc/ipsec.d/cacerts' Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loading aa certificates from '/etc/ipsec.d/aacerts' Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loading ocsp signer certificates from '/etc/ipsec.d/ocspcerts' Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loading attribute certificates from '/etc/ipsec.d/acerts' Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loading crls from '/etc/ipsec.d/crls' Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loading secrets from '/etc/ipsec.secrets' Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] expanding file expression '/var/lib/strongswan/ipsec.secrets.inc' failed Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loading secrets from '/etc/ipsec.d/nm-l2tp-ipsec-8313482f-d2cd-4e39-a18c-86b540d6a8e3.secrets' Aug 3 15:22:37 ComputerOfLiza charon: 00[CFG] loaded IKE secret for %any Aug 3 15:22:37 ComputerOfLiza charon: 00[LIB] loaded plugins: charon aesni aes rc2 sha2 sha1 md5 mgf1 random nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp dnskey sshkey pem openssl fips-prf gmp agent xcbc hmac gcm attr kernel-netlink resolve socket-default connmark stroke updown counters Aug 3 15:22:37 ComputerOfLiza charon: 00[LIB] dropped capabilities, running as uid 0, gid 0 Aug 3 15:22:37 ComputerOfLiza charon: 00[JOB] spawning 16 worker threads Aug 3 15:22:37 ComputerOfLiza charon: 05[CFG] received stroke: add connection '8313482f-d2cd-4e39-a18c-86b540d6a8e3' Aug 3 15:22:37 ComputerOfLiza charon: 05[CFG] added configuration '8313482f-d2cd-4e39-a18c-86b540d6a8e3' Aug 3 15:22:38 ComputerOfLiza charon: 09[CFG] rereading secrets Aug 3 15:22:38 ComputerOfLiza charon: 09[CFG] loading secrets from '/etc/ipsec.secrets' Aug 3 15:22:38 ComputerOfLiza charon: 09[CFG] expanding file expression '/var/lib/strongswan/ipsec.secrets.inc' failed Aug 3 15:22:38 ComputerOfLiza charon: 09[CFG] loading secrets from '/etc/ipsec.d/nm-l2tp-ipsec-8313482f-d2cd-4e39-a18c-86b540d6a8e3.secrets' Aug 3 15:22:38 ComputerOfLiza charon: 09[CFG] loaded IKE secret for %any Aug 3 15:22:38 ComputerOfLiza charon: 08[CFG] received stroke: initiate '8313482f-d2cd-4e39-a18c-86b540d6a8e3' Aug 3 15:22:38 ComputerOfLiza charon: 11[IKE] initiating Main Mode IKE_SA 8313482f-d2cd-4e39-a18c-86b540d6a8e3[1] to 77.234.209.75 Aug 3 15:22:38 ComputerOfLiza charon: 11[ENC] generating ID_PROT request 0 [ SA V V V V V ] Aug 3 15:22:38 ComputerOfLiza charon: 11[NET] sending packet: from 192.168.1.38[500] to 77.234.209.75[500] (176 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 12[NET] received packet: from 77.234.209.75[500] to 192.168.1.38[500] (156 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 12[ENC] parsed ID_PROT response 0 [ SA V V V V ] Aug 3 15:22:38 ComputerOfLiza charon: 12[IKE] received NAT-T (RFC 3947) vendor ID Aug 3 15:22:38 ComputerOfLiza charon: 12[IKE] received XAuth vendor ID Aug 3 15:22:38 ComputerOfLiza charon: 12[IKE] received DPD vendor ID Aug 3 15:22:38 ComputerOfLiza charon: 12[IKE] received FRAGMENTATION vendor ID Aug 3 15:22:38 ComputerOfLiza charon: 12[CFG] selected proposal: IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024 Aug 3 15:22:38 ComputerOfLiza charon: 12[ENC] generating ID_PROT request 0 [ KE No NAT-D NAT-D ] Aug 3 15:22:38 ComputerOfLiza charon: 12[NET] sending packet: from 192.168.1.38[500] to 77.234.209.75[500] (244 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 13[NET] received packet: from 77.234.209.75[500] to 192.168.1.38[500] (236 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 13[ENC] parsed ID_PROT response 0 [ KE No NAT-D NAT-D ] Aug 3 15:22:38 ComputerOfLiza charon: 13[IKE] local host is behind NAT, sending keep alives Aug 3 15:22:38 ComputerOfLiza charon: 13[ENC] generating ID_PROT request 0 [ ID HASH ] Aug 3 15:22:38 ComputerOfLiza charon: 13[NET] sending packet: from 192.168.1.38[4500] to 77.234.209.75[4500] (68 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 14[NET] received packet: from 77.234.209.75[4500] to 192.168.1.38[4500] (68 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 14[ENC] parsed ID_PROT response 0 [ ID HASH ] Aug 3 15:22:38 ComputerOfLiza charon: 14[IKE] IKE_SA 8313482f-d2cd-4e39-a18c-86b540d6a8e3[1] established between 192.168.1.38[192.168.1.38]...77.234.209.75[77.234.209.75] Aug 3 15:22:38 ComputerOfLiza charon: 14[IKE] scheduling reauthentication in 9724s Aug 3 15:22:38 ComputerOfLiza charon: 14[IKE] maximum IKE_SA lifetime 10264s Aug 3 15:22:38 ComputerOfLiza charon: 14[ENC] generating QUICK_MODE request 2184681364 [ HASH SA No ID ID NAT-OA NAT-OA ] Aug 3 15:22:38 ComputerOfLiza charon: 14[NET] sending packet: from 192.168.1.38[4500] to 77.234.209.75[4500] (188 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 15[NET] received packet: from 77.234.209.75[4500] to 192.168.1.38[4500] (68 bytes) Aug 3 15:22:38 ComputerOfLiza charon: 15[ENC] parsed INFORMATIONAL_V1 request 2541531291 [ HASH N(NO_PROP) ] Aug 3 15:22:38 ComputerOfLiza charon: 15[IKE] received NO_PROPOSAL_CHOSEN error notify Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: initiating Main Mode IKE_SA 8313482f-d2cd-4e39-a18c-86b540d6a8e3[1] to 77.234.209.75 Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: generating ID_PROT request 0 [ SA V V V V V ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: sending packet: from 192.168.1.38[500] to 77.234.209.75[500] (176 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received packet: from 77.234.209.75[500] to 192.168.1.38[500] (156 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: parsed ID_PROT response 0 [ SA V V V V ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received NAT-T (RFC 3947) vendor ID Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received XAuth vendor ID Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received DPD vendor ID Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received FRAGMENTATION vendor ID Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: selected proposal: IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024 Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: generating ID_PROT request 0 [ KE No NAT-D NAT-D ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: sending packet: from 192.168.1.38[500] to 77.234.209.75[500] (244 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received packet: from 77.234.209.75[500] to 192.168.1.38[500] (236 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: parsed ID_PROT response 0 [ KE No NAT-D NAT-D ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: local host is behind NAT, sending keep alives Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: generating ID_PROT request 0 [ ID HASH ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: sending packet: from 192.168.1.38[4500] to 77.234.209.75[4500] (68 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received packet: from 77.234.209.75[4500] to 192.168.1.38[4500] (68 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: parsed ID_PROT response 0 [ ID HASH ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: IKE_SA 8313482f-d2cd-4e39-a18c-86b540d6a8e3[1] established between 192.168.1.38[192.168.1.38]...77.234.209.75[77.234.209.75] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: scheduling reauthentication in 9724s Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: maximum IKE_SA lifetime 10264s Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: generating QUICK_MODE request 2184681364 [ HASH SA No ID ID NAT-OA NAT-OA ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: sending packet: from 192.168.1.38[4500] to 77.234.209.75[4500] (188 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received packet: from 77.234.209.75[4500] to 192.168.1.38[4500] (68 bytes) Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: parsed INFORMATIONAL_V1 request 2541531291 [ HASH N(NO_PROP) ] Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: received NO_PROPOSAL_CHOSEN error notify Aug 3 15:22:38 ComputerOfLiza NetworkManager[1991]: establishing connection '8313482f-d2cd-4e39-a18c-86b540d6a8e3' failed Aug 3 15:22:39 ComputerOfLiza nm-l2tp-service[1922]: xl2tpd started with pid 1997 Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Not looking for kernel SAref support. Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Using l2tp kernel support. Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: xl2tpd version xl2tpd-1.3.12 started on ComputerOfLiza PID:1997 Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Written by Mark Spencer, Copyright (C) 1998, Adtran, Inc. Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Forked by Scott Balmos and David Stipp, (C) 2001 Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Inherited by Jeff McAdams, (C) 2002 Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Forked again by Xelerance (www.xelerance.com) (C) 2006-2016 Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Listening on IP address 0.0.0.0, port 47189 Aug 3 15:22:39 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Connecting to host 77.234.209.75, port 1701 Aug 3 15:22:39 ComputerOfLiza NetworkManager[627]: <info> [1596457359.0670] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: VPN plugin: state changed: starting (3) Aug 3 15:22:46 ComputerOfLiza PackageKit: get-updates transaction /205_aeabdccb from uid 1000 finished with success after 736ms Aug 3 15:22:53 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: death_handler: Fatal signal 15 received Aug 3 15:22:53 ComputerOfLiza NetworkManager[1997]: xl2tpd[1997]: Connection 0 closed to 77.234.209.75, port 1701 (Server closing) Aug 3 15:22:53 ComputerOfLiza NetworkManager[627]: <warn> [1596457373.0812] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: VPN plugin: failed: connect-failed (1) Aug 3 15:22:53 ComputerOfLiza NetworkManager[627]: <warn> [1596457373.0813] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: VPN plugin: failed: connect-failed (1) Aug 3 15:22:53 ComputerOfLiza NetworkManager[627]: <info> [1596457373.0813] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: VPN plugin: state changed: stopping (5) Aug 3 15:22:53 ComputerOfLiza NetworkManager[2003]: Stopping strongSwan IPsec... Aug 3 15:22:53 ComputerOfLiza charon: 00[DMN] signal of type SIGINT received. Shutting down Aug 3 15:22:53 ComputerOfLiza charon: 00[IKE] deleting IKE_SA 8313482f-d2cd-4e39-a18c-86b540d6a8e3[1] between 192.168.1.38[192.168.1.38]...77.234.209.75[77.234.209.75] Aug 3 15:22:53 ComputerOfLiza charon: 00[IKE] sending DELETE for IKE_SA 8313482f-d2cd-4e39-a18c-86b540d6a8e3[1] Aug 3 15:22:53 ComputerOfLiza charon: 00[ENC] generating INFORMATIONAL_V1 request 2766966862 [ HASH D ] Aug 3 15:22:53 ComputerOfLiza charon: 00[NET] sending packet: from 192.168.1.38[4500] to 77.234.209.75[4500] (84 bytes) Aug 3 15:22:53 ComputerOfLiza nm-l2tp-service[1922]: ipsec shut down Aug 3 15:22:53 ComputerOfLiza NetworkManager[627]: <info> [1596457373.1879] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: VPN plugin: state changed: stopped (6) Aug 3 15:22:53 ComputerOfLiza NetworkManager[627]: <info> [1596457373.1906] vpn-connection[0x55c0c1266110,8313482f-d2cd-4e39-a18c-86b540d6a8e3,"Work",0]: VPN service disappeared Aug 3 15:23:02 ComputerOfLiza NetworkManager[627]: <info> [1596457382.2593] audit: op="statistics" arg="refresh-rate-ms" pid=990 uid=1000 result="success" 
