==========================================================
NetworkManager-l2tp-1.52.0
Overview of changes since NetworkManager-l2tp-1.20.22
==========================================================

Changes:
* Verify file permissions for private connections to
  prevent unprivileged user from using other user's
  certs (CVE-2025-9615). Requires NetworkManager 1.52.2,
  1.54.3 or 1.56.0 and later.
* Fixes g_dbus_method_invocation_take_error: assertion
 'error != NULL' failed warning.
* Merge translations from NetworkManager-fortisslvpn,
  NetworkManager-libreswan and NetworkManager-openvpn.

==========================================================
NetworkManager-l2tp-1.20.22
Overview of changes since NetworkManager-l2tp-1.20.20
==========================================================

Changes:
* Add group read permission to /etc/ipsec.d/ipsec.nm-l2tp.secrets.
  Required when Gentoo strongswan package is built with the "non-root" local
  USE flag, otherwise charon daemon does not have the privileges to read
  the ipsec.nm-l2tp.secrets file.
* Stored PSK is no longer visible in auth-dialog.
* Stored machine certificate passphrase is no longer visible in auth-dialog.
* Check the presence of the L2TP editor plugin and provide feedback via the
  capabilities.
* Wide character password fix.
* Port auth-dialog Gtk4
* Update and improve zh_TW Traditional Chinese locale.

==========================================================
NetworkManager-l2tp-1.20.20
Overview of changes since NetworkManager-l2tp-1.20.18
==========================================================

Changes:
* ipsec, xl2tpd & kl2tpd command-line debugging output
  added.
* Fixes for gcc -Werror=format-security errors.
* Silence gcc -Wmaybe-uninitialized warning.
* No longer ignore libreswan failed to add connection
  errors, such as:
    global ikev1-policy does not allow IKEv1 connections.
* Fix for libreswan 5.x deprecation warnings when using
  libreswan 5.x:
  - ikev2=no has been replaced by keyexchange=ikev1.
  - keyingtries=0 ignored, UP connection will attempt
    to establish until marked DOWN.
* Merge translations from from NetworkManager-openvpn and
  NetworkManager-pptp.

==========================================================
NetworkManager-l2tp-1.20.18
Overview of changes since NetworkManager-l2tp-1.20.16
==========================================================

Changes:
* validation of properties fix.
* cinnamon-control-center compatibility fix.
* The starting message for nm-l2tp-service, which includes
  the version number, is now visible in journalctl output
  even when not in debug mode.
* Fix autoconf 2.69 syntax error for configure.ac.

==========================================================
NetworkManager-l2tp-1.20.16
Overview of changes since NetworkManager-l2tp-1.20.14
==========================================================

Changes:
* Libreswan 4.15 compatibility.
  Previous Libreswan 5.0 compatibility changes involving
  "auto" command detection broke with Libreswan 4.15, but
  not earlier version.
* Merge translations from KDE Frameworks 6 plasma-nm
* Merge translations from NetworkManager and libnma

==========================================================
NetworkManager-l2tp-1.20.14
Overview of changes since NetworkManager-l2tp-1.20.12
==========================================================

Changes:
* Libreswan 5.0 compatibility
* get_localaddr() for non-ephemeral source port fallback
* Update Chinese (zh_CN) translation.

==========================================================
NetworkManager-l2tp-1.20.12
Overview of changes since NetworkManager-l2tp-1.20.10
==========================================================

Changes:
* Add support for usernames that contain a space
* Fixes MPPE protocol negotiation by not using noccp ppp
  option when MPPE is selected.
* Determine correct local IP address for IPSec
* Update Georgian (ka) translation.

==========================================================
NetworkManager-l2tp-1.20.10
Overview of changes since NetworkManager-l2tp-1.20.8
==========================================================

Changes:
* Fix missing ppp user option.
* Add support for compiling against pppd-2.5.0.
* Add error output for missing TLS filenames.
* Remove bashisms in configure script.
* Spell checked code with CSpell.

==========================================================
NetworkManager-l2tp-1.20.8
Overview of changes since NetworkManager-l2tp-1.20.6
==========================================================

Changes:
* Fix padding of PPP Options dialog.
* Undo PTP peer & ext GW routing prevention workaround first introduced
  with NetworkManager-l2tp 1.8.4 as workaround no longer works with
  NetworkManager 1.36. The actial fix should be done in NetworkManager.
* Add support for Manual IPv4 configuration options:
  Address, Netmask and Gateway.
* Remove deprecated OpenSSL 3 related code
* Load L2TP kernel modules if NM_L2TP_MODPROBE env variable set.

==========================================================
NetworkManager-l2tp-1.20.6
Overview of changes since NetworkManager-l2tp-1.20.4
==========================================================

Changes:
* Fix for Libreswan 4.9 and later detection.
* Fix for ipsec-psk-flags setting not being saved.
* Fix out-of-bounds access in export_ip4.
* Add getenv NM_L2TP_XL2TPD_MAX_RETRIES to allow setting the xl2tpd
  max retries value with an env variable.
* Drop unused ChangeLog file.
* Increase IPsec and L2TP daemon wait timeouts for better debugging.
* Update Georgian (ka) translation.

==========================================================
NetworkManager-l2tp-1.20.4
Overview of changes since NetworkManager-l2tp-1.20.2
==========================================================

Changes:
* Security fix for properly detecting that strongswan CHILD_SA connection
  has been estabilished.
* Fix for libreswan cannot route template policy error.

==========================================================
NetworkManager-l2tp-1.20.2
Overview of changes since NetworkManager-l2tp-1.20.0
==========================================================

Changes:
* Gtk4 version of the editor plugin is now available (for use with Control
  Center of GNOME 42 or later).
* Updated translations.

==========================================================
NetworkManager-l2tp-1.20.0
Overview of changes since NetworkManager-l2tp-1.8.6
==========================================================

Changes:
* Support for kl2tpd from Katalix's go-l2tp project added.
* Support for Multilink PPP added.
* L2TP ephemeral source port checkbox added.
* deprecated libnm-glib/libnm-util code removed and
  --with-libnm-glib configure option removed.
* Honors $CHARONDEBUG and $PLUTODEBUG even without --debug.
* Sourcecode reformatted with clang-format.
* intltool for i18n build support no longer required.
* Updated translations.

==========================================================
NetworkManager-l2tp-1.8.6
Overview of changes since NetworkManager-l2tp-1.8.4
==========================================================

Changes:
* Fix for preventing Fedora RPMs from building.
  add missing properties/import-export.c to POTFILES.in

==========================================================
NetworkManager-l2tp-1.8.4
Overview of changes since NetworkManager-l2tp-1.8.2
==========================================================

Changes:
* Update translations.
* Update strings for new dialog design in gnome-shell.
  e.g use "Password" instead of "Password:".
* Use /usr/share/metainfo for AppData files.
* Move D-Bus policy file to /usr/share/dbus-1/system.d/
* Add --with-nm-ipsec-nss-dir configure switch for Libreswan NSS
  database location with default value of /var/lib/ipsec/nss
* Do not add broken route to VPN gateway IP address.
* Add back import/export capability.
* update default PPPD_PLUGIN_DIR to ${libdir}/pppd/2.4.8
* Fix for user certificate password flags for connection editor.

==========================================================
NetworkManager-l2tp-1.8.2
Overview of changes since NetworkManager-l2tp-1.8.0
==========================================================

Changes:
* Fixes for user certificate support.
* Remove modp1024 in default phase 1 algorithms for Libreswan, as
  libreswan >= 3.30 is no longer built with DH2 (modp1024) support.
* Provide --enable-libreswan-dh2 configure switch for older libreswan versions.
* KDE plasma-nm compatibility for "Gateway ID".

==========================================================
NetworkManager-l2tp-1.8.0
Overview of changes since NetworkManager-l2tp-1.2.16
==========================================================

* User and machine TLS certificate support.
* New dependency on OpenSSL's libcrypto (>= 1.1.0).
* New dependency on Network Security Services (NSS) libraries.
* Routines to auto detect the following TLS certificate and private key file
  formats by looking at the file contents and not the file extension, also
  determines if the files are encrypted with a password, which includes
  testing if the password is the empty string or NULL :
  - PKCS#12 certificates.
  - X509 certificates (PEM or DER).
  - PKCS#8 private keys (PEM or DER)
  - traditional OpenSSL RSA, DSA and ECDSA private keys (PEM or DER).
* Routines to import certificates and privates keys into a Libreswan NSS
  database.
* Grey out the auth type selection for user authentication if EAP-TLS
  pppd patch not detected.
* Update translations.

==========================================================
NetworkManager-l2tp-1.2.16
Overview of changes since network-manager-l2tp-1.2.14
==========================================================

* Update translations.
* Fix label geometry in LT2P dialog box.
* Remove "Prevalent Algorithms" button, override default algorithms.
  Made the phase 1 & 2 proposals previously provided by the Prevalent
  Algorithms button the new default for the IKEv1 proposals.

==========================================================
NetworkManager-l2tp-1.2.14
Overview of changes since network-manager-l2tp-1.2.12
==========================================================

* Update translations by merging from various sources.
* Changed Legacy Proposal button to Prevalent Algorithms button.
  Clicking Prevalent Algorithms button populates Phase 1 and 2 Algorithm text
  entry boxes with the following proposals, which are a merge of Windows 10
  and macOS/iOS/iPadOS L2TP clients' IKEv1 proposals.
  - Phase 1 - Main Mode :
    {enc=AES_CBC_256 integ=HMAC_SHA2_256_128 group=MODP_2048},
    {enc=AES_CBC_256 integ=HMAC_SHA2_256_128 group=MODP_1536},
    {enc=AES_CBC_256 integ=HMAC_SHA2_256_128 group=MODP_1024},
    {enc=AES_CBC_256 integ=HMAC_SHA1_96 group=MODP_2048},
    {enc=AES_CBC_256 integ=HMAC_SHA1_96 group=MODP_1536},
    {enc=AES_CBC_256 integ=HMAC_SHA1_96 group=MODP_1024},
    {enc=AES_CBC_256 integ=HMAC_SHA1_96 group=ECP_384},
    {enc=AES_CBC_128 integ=HMAC_SHA1_96 group=MODP_1024},
    {enc=AES_CBC_128 integ=HMAC_SHA1_96 group=ECP_256},
    {enc=3DES_CBC integ=HMAC_SHA1_96 group=MODP_2048},
    {enc=3DES_CBC integ=HMAC_SHA1_96 group=MODP_1024}
  - Phase 2 - Quick Mode :
    {enc=AES_CBC_256 integ=HMAC_SHA1_96},
    {enc=AES_CBC_128 integ=HMAC_SHA1_96},
    {enc=3DES_CBC integ=HMAC_SHA1_96}
* Added use IKEv2 key exchange option.
* Improved debugging output for Libreswan and strongSwan.
  Libreswan debugging can now be cutomized by setting the `PLUTODEBUG`
  environment variable.
  strongSwan debugging can now  be cutomized by setting the `CHARONDEBUG`
  environment variable.
* Gray out "IPsec Settings..." button if no *swan found.
  Also fix crash if "IPsec Settings..." button pressed and no *swan installed.

==========================================================
NetworkManager-l2tp-1.2.12
Overview of changes since NetworkManager-l2tp-1.2.10
==========================================================

* Update translations by merging from various sources.
* Added Legacy Proposal button.
  Clicking Legacy Proposals button populates Phase 1 and 2 Algorithm text entry
  boxes with proposals offered by Windows Server 2019:
  - AES256, SHA-1, ECP384 and AES128, SHA-1, ECP256 strong proposals.
    strongSwan recommends not using SHA-1 in its security recommendations
    documentation.
  - 3DES, SHA-1, MODP1024 broken proposal.
    Legacy Windows 2000 Server era proposal still commonly offered, especially
    with consumer routers
* Added following IPsec configuration options:
  - Phase1 Lifetime - ikelifetime.
  - Phase2 Lifetime - salifetime (libreswan) / lifetime (strongswan).
  - Use IP compression - compress.
  - Disable PFS - pfs.
* renamed Gateway ID to Remote ID and updated GUI tooltip.
* removed restrictions that only IP addresses are allowed for the Remote ID.
* Generated config file changes, following config files :
  - /var/run/nm-l2tp-xl2tpd-_UUID_.conf
  - /var/run/nm-l2tp-xl2tpd-control-_UUID_
  - /var/run/nm-l2tp-xl2tpd-_UUID_.pid
  - /var/run/nm-l2tp-ppp-options-_UUID_
  are now:
  - /var/run/nm-l2tp-_UUID_/xl2tpd.conf
  - /var/run/nm-l2tp-_UUID_/xl2tpd-control
  - /var/run/nm-l2tp-_UUID_/xl2tpd-.pid
  - /var/run/nm-l2tp-_UUID_/ppp-options
* Use same IP secrets file for all L2TP connections, 
  /etc/ipsec.d/ipsec.nm-l2tp.secrets is now used instead of
  /etc/ipsec.d/nm-l2tp-ipsec-_UUID_.secrets, where _UUID_ was the UUID of the
  VPN connection.
* Force ikev2=never for Libreswan 
  ikev2=permit is the implicit default setting, which tries to detect
  a "bid down" attack from IKEv2 to IKEv1 and can have an impact on
  the default proposals.
* Add nm-l2tp-service- prefix back to pppd ipparam argument.
  The ipparam argument is used by a condition in the Debian resolvconf's
  /etc/ppp/ip-up.d/000resolvconf script.
* PSK is now Base64 encoded, allows PSK to contain double quotation mark (").
* Fix build without GTK/Gnome.
* Legacy KDE Plasman-nm user certificate support.
* libnm-glib compatibility (NetworkManager < 1.0) is disabled by default.
  It can be enabled by passing --with-libnm-glib to configure script.
  Nobody should need it by now. Users that still use this are encouraged
  to let us know before the libnm-glib support is removed for good.
* The auth helper in external UI mode can now be run without a display
  server. Future nmcli version will utilize this for handling the
secrets without a graphical desktop.

=======================================================
NetworkManager-l2tp-1.2.10
Overview of changes since NetworkManager-l2tp-1.2.8
=======================================================

This is a new stable release of NetworkManager-l2tp.  Notable changes include:

* Point version 1.2.10 appdata image URIs to nm-1-2 github branch:
  https://raw.githubusercontent.com/nm-l2tp/NetworkManager-l2tp/nm-1-2/appdata
* Corrected force UDP encapsulation toggle button behavior.
* Workaround for libreswan `ipsec status` issue with short (< 8 char) PSKs.
* fix gcc -Wimplicit-fallthrough warning.

=======================================================
NetworkManager-l2tp-1.2.8
Overview of changes since NetworkManager-l2tp-1.2.6
=======================================================

This is a new stable release of NetworkManager-l2tp.  Notable changes include:

* Updated translations, merged from NetworkManager-applet,
  NetworkManager-libreswan, NetworkManager-pptp and
  KDE Plasma NetworkManagement L2TP. Removed obsolete translations.
* Enforce UDP encapsulation toggle button fix.
* Stop strongSwan service when a connection cannot be established.
* fix entries in Debian Lintian spelling-error-in-binary report.
* configure --runstatedir support if using Autoconf >= 2.7.0.
* If "Automatic (VPN) Addresses Only" mode is enabled in the the IPv4
  config settings, do not use the pppd usepeerdns option.
  i.e. do not overide /etc/resolv.conf.

=======================================================
NetworkManager-l2tp-1.2.6
Overview of changes since NetworkManager-l2tp-1.2.4
=======================================================

This is a new stable release of NetworkManager-l2tp.  Notable changes include:

* If L2TP port 1701 is already in use, no longer writes
  "leftprotoport=udp/l2tp" (which is equivalent to "leftprotoport=udp/1701") to
  the ipsec config file. This was done to ensures L2TP is encapsulated in IPsec
* Uses UUID instead of PID for run-time generated filenames
* No longer temporarily replaces system /etc/ipsec.secrets file
* IPsec rekeying is now possible because the following file remains for the
  lifetime of the VPN connection :
    /etc/ipsec.d/nm-l2tp-ipsec-UUID.secrets
* Following line is appended to /etc/ipsec.secrets if the include line is
  missing:
    include /etc/ipsec.d/*.secrets
* Removed IPsec Group Name from user interface
* Added IPsec Phase 1 (ike) & Phase 2 (esp) to user interface
* New timeout code for IPsec connection up script.

=======================================================
NetworkManager-l2tp-1.2.4
Overview of changes since NetworkManager-l2tp-1.2.2
=======================================================

This is a new stable release of NetworkManager-l2tp.  Notable changes include:

* Prefer building against stable libsecret API
* Split libnm-vpn-plugin-l2tp.so into a GTK-free core plugin
  usable by nmcli and a UI plugin for nm-applet and gnome components
* Successfully builds on 32bit Linux 
* Explicitly check strongSwan connection has been established
  and not trust use exit status of strongSwan 'ipsec up' command
* Support weaker initial proposals on later versions of strongSwan
* Support IP addresses for IPsec leftid and rightid
* 10 second timeout for ipsec starter process