docs/releases/v2014.4.rst

@@ -146,7 +146,7 @@ Ignored tx-power offset on Ubiquiti AirMax devices
 
 https://github.com/freifunk-gluon/gluon/issues/94
 
-There is still no OpenWRT support for determining the transmission
+There is still no OpenWrt support for determining the transmission
 power offsets on Ubiquiti AirMax devices (Bullet M2, Picostation
 M2, Nanostation (loco) M2, ...). Use Gluon with caution on these
 devices! Manual adjustment may be required.

docs/releases/v2015.1.rst

@@ -19,7 +19,7 @@ ar71xx-generic
 
   - DIR-615 (C1)
 
-* GL-Inet
+* GL.iNet
 
   - 6408A (v1)
   - 6416A (v1)

docs/releases/v2017.1.rst

@@ -88,6 +88,8 @@ New features
 * Add support for making nodes a DNS cache for clients
   (`#1000 <https://github.com/freifunk-gluon/gluon/pull/1000>`_)
 
+  See also: :doc:`../features/dns-cache`
+
 * Add L2TP via tunneldigger as an alternative VPN system
   (`#978 <https://github.com/freifunk-gluon/gluon/pull/978>`_)
 

docs/releases/v2018.1.2.rst

@@ -28,7 +28,7 @@ Bugfixes
   As the path to both config mode and status page were changed between versions
   users could be affected by a redirect to a no more valid URL. 
 
-* batman-adv has received two bugfixes, which were `backported <https://github.com/openwrt-routing/packages/commit/7bf62cc8b556b5046f9bbd37687376fe9ea175bb>`_ from v2018.4
+* batman-adv has received two bugfixes, which were `backported <https://github.com/openwrt/routing/commit/7bf62cc8b556b5046f9bbd37687376fe9ea175bb>`_ from v2018.4
 
 Other changes
 ~~~~~~~~~~~~~

docs/releases/v2018.2.1.rst

@@ -21,7 +21,7 @@ ramips-mt7620
 ramips-mt76x8
 ^^^^^^^^^^^^^
 
-* Gl.iNet
+* GL.iNet
 
   - MT300N (v2) [#noibss]_
 
@@ -61,7 +61,7 @@ Bugfixes
 
   This affects the following devices:
 
-  * GL.iNet GL-AR150, 
+  * GL.iNet GL-AR150
   * GL.iNet GL-AR300M
   * GL.iNet GL-AR750
   * Raspberry Pi Model B+ Rev 1.2

docs/releases/v2018.2.3.rst

+Gluon 2018.2.3
+==============
+
+Added hardware support
+~~~~~~~~~~~~~~~~~~~~~~
+
+ar71xx-generic
+^^^^^^^^^^^^^^
+
+* TP-Link
+
+  - CPE210 v3
+  
+ar71xx-nand
+^^^^^^^^^^^
+
+* Aerohive
+
+  - HiveAP 121
+
+mcp85xx-p1020
+^^^^^^^^^^^^^
+
+* Aerohive
+
+  - HiveAP 330
+
+ramips-mt76x8
+^^^^^^^^^^^^^
+
+* TP-Link
+
+  - TL-MR3420 v5 [#noibss]_
+  
+.. [#noibss]
+  Device or target does not support AP+IBSS mode: This device or target will not be built
+  when *GLUON_WLAN_MESH* is set to ``ibss``.
+
+
+Bugfixes
+~~~~~~~~
+
+* Fixes passwordless SSH access when gluon-authorized-keys was used without gluon-setup-mode. (`#1777 <https://github.com/freifunk-gluon/gluon/issues/1777>`_)
+
+* Fixes ingress traffic shaping. A necessary kernel config value was not set. (`#1790 <https://github.com/freifunk-gluon/gluon/issues/1790>`_)
+
+* Fixes the generation of the bootloader image for the AVM FRITZ!Box 4040. (`#1766 <https://github.com/freifunk-gluon/gluon/issues/1766>`_)
+
+* Fixes the IBSS mesh on the GL.iNet AR750. The wrong driver/firmware package was previously selected. (`#1792 <https://github.com/freifunk-gluon/gluon/pull/1792>`_)
+
+* Fixes the primary mac selection on the TP-Link Archer C25 v1. (`#1771 <https://github.com/freifunk-gluon/gluon/issues/1771>`_)
+
+
+Other changes
+~~~~~~~~~~~~~
+
+* Linux kernel has been updated to either
+  
+  - 4.9.188 (ar71xx, brcm2708, mpc85xx) or
+  - 4.14.137 (ipq40xx, ipq806x, mvebu, ramips, sunxi, x86).
+
+
+Known issues
+~~~~~~~~~~~~
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are
+  unknown (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is
+  disabled (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected
+  (like VMware when promiscuous mode is disallowed).
+
+* Inconsistent respondd API
+  (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API
+  will still be supported for a while.
+
+* Frequent reboots due to out-of-memory or high load due to memory pressure on
+  weak hardware especially in larger meshes
+  (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.

docs/releases/v2018.2.4.rst

+Gluon 2018.2.4
+==============
+
+End of life
+~~~~~~~~~~~~~~
+
+This will be the final release of the v2018.2.x series. Updating to the v2019.1.x release series is the recommended course of action, which should be fairly easy.
+
+Bugfixes
+~~~~~~~~
+
+* Fixes device alias for Ubiquiti UniFi AC LR. (`#1834 <https://github.com/freifunk-gluon/gluon/issues/1834>`_)
+  Autoupdates on this model were impossible before, since we were missing the proper device alias.
+
+* Add correct ath10k firmware package for Ocedo Koala. (`#1838 <https://github.com/freifunk-gluon/gluon/pull/1838>`_)
+
+* Fixes various batman-adv bugs with backports from 2019.4 and 2019.5 by updating the openwrt-routing packages feed
+
+Other changes
+~~~~~~~~~~~~~
+
+* Linux kernel has been updated to either
+
+  - 4.9.207 (ar71xx, brcm2708, mpc85xx) or
+  - 4.14.160 (ipq40xx, ipq806x, mvebu, ramips, sunxi, x86).
+
+Known issues
+~~~~~~~~~~~~
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are
+  unknown (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is
+  disabled (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected
+  (like VMware when promiscuous mode is disallowed).
+
+* Inconsistent respondd API
+  (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API
+  will still be supported for a while.
+
+* Frequent reboots due to out-of-memory or high load due to memory pressure on
+  weak hardware especially in larger meshes
+  (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.

docs/releases/v2018.2.rst

@@ -18,7 +18,7 @@ ar71xx-generic
 
   - Fritz!WLAN Repeater 450E
 
-* OCEDO
+* Ocedo
 
   - Koala
 

docs/releases/v2019.1.1.rst

+Gluon 2019.1.1
+##############
+
+Bugfixes
+********
+
+* Fixes device alias for Ubiquiti UniFi AC LR. (`#1834 <https://github.com/freifunk-gluon/gluon/issues/1834>`_)
+  Autoupdates on this model were impossible before, since we were missing the proper device alias.
+
+* Add correct ath10k firmware package for Ocedo Koala. (`#1838 <https://github.com/freifunk-gluon/gluon/pull/1838>`_)
+
+* Fixes various batman-adv bugs with backports from 2019.4 and 2019.5 by updating the openwrt-routing packages feed.
+
+* Fixes node role list.  (`#1851 <https://github.com/freifunk-gluon/gluon/issues/1851>`_)
+  With Gluon v2019.1 it became impossible to change the role of a node via the config mode.
+
+Other Changes
+*************
+
+* Linux kernel has been updated to either
+
+  - 4.9.207 (ar71xx, brcm2708, mpc85xx) or
+  - 4.14.160 (ipq40xx, ipq806x, mvebu, ramips, sunxi, x86).
+
+Known issues
+************
+
+* Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+* Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+
+* Frequent reboots due to out-of-memory or high load due to memory pressure on weak hardware especially in larger
+  meshes (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.
+

docs/releases/v2019.1.2.rst

+Gluon 2019.1.2
+##############
+
+Bugfixes
+********
+
+* Fixes a buffer-overflow vulnerability in libubox, a core component of OpenWrt
+  (CVE-2020-7248)
+
+* Fixes a vulnerability in the OpenWrt package manager (opkg). By using this vulnerability,
+  an attacker could bypass the integrity check of the package artifacts. (CVE-2020-7982)
+
+Other Changes
+*************
+
+* Linux kernel has been updated to either
+
+  - 4.9.211 (ar71xx, brcm2708, mpc85xx) or
+  - 4.14.167 (ipq40xx, ipq806x, mvebu, ramips, sunxi, x86).
+
+Known issues
+************
+
+* Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+* Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+
+* Frequent reboots due to out-of-memory or high load due to memory pressure on weak hardware especially in larger
+  meshes (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.
+

docs/releases/v2019.1.3.rst

+Gluon 2019.1.3
+==============
+
+Bugfixes
+--------
+
+- Fixes a bug in the tunneldigger watchdog where the watchdog would incorrectly find itself while looking up the running tunneldigger process. It then went on and assumed a PID mismatch between the tunneldigger service and its PID file and therefore caused an unnecessary restart of the tunnel. (`#1952 <https://github.com/freifunk-gluon/gluon/issues/1952>`_)
+
+- Fixes an oversight in the firewalling of the respondd service where queries from prefix listed in ``extra_prefixes6`` would be dropped. (`#1941 <https://github.com/freifunk-gluon/gluon/issues/1941>`_)
+
+- Fixes a bug in ``gluon-web`` where forms would not correctly update their field visibility on reset. This affected, for example, the private wifi page in the config mode. (`#1970 <https://github.com/freifunk-gluon/gluon/pull/1970>`_)
+
+- Fixes RX buffer sizing in the ath10k driver to allow for frames larger than 1528 Bytes. (`#1992 <https://github.com/freifunk-gluon/gluon/pull/1992>`_)
+
+- Fixed handling of mesh interfaces together with outdoor mode, site.conf defaults and config mode (`#2049 <https://github.com/freifunk-gluon/gluon/pull/2049>`_) (`#2054 <https://github.com/freifunk-gluon/gluon/pull/2054>`_)
+
+- Fixes a bug with perl when building Gluon v2019.1.x with GCC10
+
+- Fixes a buffer leak in fastd when receiving invalid packets
+
+Other Changes
+-------------
+
+- Linux kernel has been updated to either
+
+  - 4.9.237 (ar71xx, brcm2708, mpc85xx) or
+  - 4.14.199 (ipq40xx, ipq806x, mvebu, ramips, sunxi, x86).
+
+- Backports of batman-adv bugfixes
+
+Known issues
+------------
+
+* Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+* Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+
+* Frequent reboots due to out-of-memory or high load due to memory pressure on weak hardware especially in larger
+  meshes (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.
+

docs/releases/v2019.1.rst

+Gluon 2019.1
+############
+
+Important notes
+***************
+
+Gluon v2019.1.x will be the last series of releases to support batman-adv-legacy (v14 compat) and IBSS
+(Ad-hoc) mesh links. Migration features have been developed and should be used during this release cycle
+to migrate to batman-adv v15 compat and/or 802.11s mesh links. These migration features are the
+:doc:`scheduled domain switching <../package/gluon-scheduled-domain-switch>` (since v2018.2.1) and
+:ref:`batman-adv module coexistence <release-v2019.1-batman-adv-coexistence>` (since v2019.1, see below).
+The migration must be completed before an upgrade to future Gluon releases (v2019.2 or later) becomes
+possible.
+
+With Gluon v2019.1, nodes will not answer respondd queries on ``[ff02::2:1001]:1001`` anymore. Respondd
+querier setups still using this address must be updated to the new address ``[ff05::2:1001]:1001``
+(supported since Gluon v2017.1). This change was required due to cross-domain leakage of respondd data.
+If you are using hopglass-server to query respondd data, you need to update it to at least commit f0e2c0a5.
+
+If you are upgrading from a version prior to v2018.1, please note that the flash layout on some
+devices (TP-Link CPE/WBS 210/510) was changed. To avoid upgrade failures, make sure to upgrade
+to Gluon 2017.1.8 or the latest Gluon 2016.2.x (unreleased) before installing Gluon 2018.1, 2018.2 or 2019.1.
+
+Added hardware support
+**********************
+
+ar71xx-generic
+==============
+
+* D-Link
+
+  - DAP-1330 A1
+
+ar71xx-tiny [#deprecated]_
+==========================
+
+* TP-Link
+
+  - TL-WR840N v2
+
+ipq40xx
+=======
+
+* 8devices
+
+  - Jalapeno
+
+mpc85xx-p1020 [#newtarget]_
+===========================
+
+* Aerohive
+
+  - HiveAP 330
+
+ramips-mt7621
+=============
+
+* ASUS
+
+  - RT-AC57U [#noibss]_
+
+.. [#deprecated]
+  This target will be reaching its end of life soon. This means that support
+  in the next major release of Gluon is doubtful.
+
+.. [#newtarget]
+  This is a new target.
+
+.. [#noibss]
+  Device or target does not support AP+IBSS mode: This device or target will not be built
+  when *GLUON_WLAN_MESH* is set to ``ibss``.
+
+
+.. note::
+
+  The ``ipq806x`` target has been flagged as broken, as none of its devices are fully supported in this OpenWrt
+  release yet. You might have to update your build scripts accordingly.
+
+
+
+New features
+************
+
+.. _release-v2019.1-batman-adv-coexistence:
+
+batman-adv coexistence
+======================
+
+To allow a migration from B.A.T.M.A.N. Adv. compat 14 this Gluon release offers the ability to ship both
+B.A.T.M.A.N. Adv. compat versions 14 and 15 in the same image. The ``mesh.batman_adv.routing_algo`` option is used
+to decide which module gets loaded and the scheduled domain switching functionality can be used to migrate between
+the two versions.
+
+Note that if you were using ``gluon-mesh-batman-adv-14`` ("batman-adv-legacy") before you will need to update the
+``mesh.batman_adv.routing_algo`` setting from ``BATMAN_IV`` to ``BATMAN_IV_LEGACY`` if you want to
+stay on v14 compat.
+
+See the :ref:`mesh <user-site-mesh>` section for the *site.conf* configuration of this feature.
+
+Outdoor Mode
+============
+
+Radio devices hosted outdoors are often affected by different regulation than if they were installed indoors. The
+outdoor mode allows for the reconfiguration of 5 GHz radios onto different channels and channel ranges.
+Regulatory policies like DFS currently make it difficult to use the 5 GHz band for mesh networking because it's
+never certain that nodes will stay on the same channel.
+If enabled, by setting ``wifi5.outdoor_chanlist``, a number of devices that are commonly installed outdoors will
+have outdoor mode automatically enabled during their initial setup, specifically:
+
+* Ubiquiti
+
+  - Bullet M
+  - Litebeam M5
+  - Nanostation M5
+  - Nanostation M5 Loco
+  - Rocket M5
+  - Rocket M5 TI
+  - Unifi AC Mesh
+  - Unifi AC Mesh Pro
+  - Unifi Outdoor
+
+* TP-Link
+
+  - CPE510
+  - WBS510
+
+See the :ref:`wifi5 <user-site-wifi5>` section for the *site.conf* configuration of this feature.
+
+Device Deprecation
+==================
+
+The ar71xx-tiny and several devices in the ramips-rt305x target have been marked as deprecated. The `GLUON_DEPRECATED`
+flag was introduced to offer communities the choice on how to deal with the ending support for those devices. Devices
+or targets marked as deprecated will very likely not be included in following Gluon releases anymore, usually due to
+their insufficient flash size.
+
+See the :ref:`Build configuration <user-site-build-configuration>` section for details.
+
+Hoodselector: Geolocation Mode
+==============================
+
+The new hoodselector package allows a node to automatically reevaluate its selected mesh domain at runtime. In this
+release we support its geolocation feature.
+
+See the :doc:`../package/gluon-hoodselector` documentation for details.
+
+
+x86 images support firstboot
+============================
+
+x86 images are now using squashfs instead of ext4 and can now have their configuration reset by using ``firstboot``.
+
+
+Bugfixes
+********
+
+* Fixes passwordless SSH access when gluon-authorized-keys was used without gluon-setup-mode.
+  (`#1777 <https://github.com/freifunk-gluon/gluon/issues/1777>`_)
+
+* Fixes cross-domain leakage of respondd data by not joining the link-local multicast group on br-client. Nodes will
+  not be answering respondd queries on ``[ff02::2:1001]:1001`` anymore. Respondd queries using that address must be
+  updated to the new address ``[ff05::2:1001]:1001``. (`#1701 <https://github.com/freifunk-gluon/gluon/issues/1701>`_)
+
+
+Site changes
+************
+
+When updating a site configuration from Gluon 2018.2.x, the following changes must be made:
+
+site.mk
+=======
+
+* We now require the ``GLUON_DEPRECATED`` variable to be set to decide how to handle the image generation for
+  deprecated devices. (`#1745 <https://github.com/freifunk-gluon/gluon/pull/1745>`_)
+
+* The variable ``DEVICES`` that controls which devices to build images for has been renamed to ``GLUON_DEVICES``.
+  (`#1686 <https://github.com/freifunk-gluon/gluon/pull/1686>`_)
+
+* The ``gluon-radvd`` package is now included by default and can be dropped from *FEATURES* and *GLUON_SITE_PACKAGES*.
+
+site.conf
+=========
+
+* The ``mesh.batman_adv.routing_algo`` option is now required when the batman-adv routing protocol is used.
+  (`#1622 <https://github.com/freifunk-gluon/gluon/pull/1622>`_)
+
+  To continue using batman-adv v14 compat you need to set this option from ``BATMAN_IV`` to ``BATMAN_IV_LEGACY``.
+
+* The options ``wifi*.basic_rates`` and ``wifi*.supported_rates`` have been removed, as the legacy 802.11b rates are
+  now disabled by default. (`#1716 <https://github.com/freifunk-gluon/gluon/pull/1716>`_)
+
+
+Gateway recommendations
+***********************
+
+These are recommendations for running non-Gluon nodes, like for example gateways, in your mesh network:
+
+* Since Gluon v2018.1 the IGMP/MLD segmentation feature was enabled by default. When ``bat0`` is run with a bridge on
+  top the ``bat0`` bridge port should be set to receive all multicast traffic unconditionally:
+
+  ::
+
+    # echo 2 > /sys/class/net/bat0/brport/multicast_router
+
+  See the chapter on :ref:`IGMP/MLD Domain Segmentation <igmp-mld-domain-segmentation>` for more details.
+
+
+Internals
+*********
+
+Debug Build Flag
+================
+
+Setting ``GLUON_DEBUG=1`` will provide firmware images including debugging symbols usable with GDB or similar tools.
+Requires a device or target with at least 16 MB of flash space, e.g. `x86-64`. Unset by default.
+
+Lua target files
+================
+
+Target definitions were rewritten in Lua; this was necessary to implement the device deprecation feature. It also
+offers the option for more flexible tagging of devices in the future.
+(`#1745 <https://github.com/freifunk-gluon/gluon/pull/1745>`_)
+
+luacheck
+========
+
+Lua scripts can now be properly linted and analyzed using luacheck. Run ``luacheck package scripts target`` in the
+Gluon project root. (`#1741 <https://github.com/freifunk-gluon/gluon/pull/1741>`_)
+
+
+Docker build environment
+========================
+
+A minimal docker-based build environment is now available in ``contrib/Dockerfile``.
+(`#1738 <https://github.com/freifunk-gluon/gluon/pull/1738>`_)
+
+
+Reload of domain-related services
+=================================
+
+A mechanism to reload domain related services is now available.
+(`#1710 <https://github.com/freifunk-gluon/gluon/pull/1710>`_)
+
+
+.. _releases-v2019.1-known-issues:
+
+
+Known issues
+************
+
+* Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+* Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+
+* Frequent reboots due to out-of-memory or high load due to memory pressure on weak hardware especially in larger
+  meshes (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.
+

docs/releases/v2020.1.1.rst

+Gluon 2020.1.1
+==============
+
+This is the first service release for the Gluon 2020.1.x line, fixing regressions reported by
+the community.
+
+Bugfixes
+--------
+
+- Fixed non-working LEDs on TP-Link Archer C5 v1 and Archer C7 v2 after an upgrade to Gluon 2020.1.
+
+- Fixed an issue which leads to AVM FRITZ!WLAN Repeater 450E devices being stuck in failsafe mode
+  after an upgrade to Gluon 2020.1.
+
+Other changes
+-------------
+
+- Linux kernel has been updated to 4.14.171
+
+Known issues
+------------
+
+- Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+- The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+- Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+- The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+- Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+
+- Frequent reboots due to out-of-memory or high load due to memory pressure on weak hardware especially in larger
+  meshes (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.
+
+- High chance of ending in a soft-bricked state for Ubiquiti EdgeRouter-X. Workaround is to
+  repeat initial installation using the serial console. (`#1937 <https://github.com/freifunk-gluon/gluon/issues/1937>`_)

docs/releases/v2020.1.2.rst

+Gluon 2020.1.2
+==============
+
+Removed hardware support
+------------------------
+
+lantiq-xway
+~~~~~~~~~~~
+
+- AVM FRITZ!Box 7320 [#switchports_not_working]_
+- AVM FRITZ!Box 7330 [#switchports_not_working]_
+- AVM FRITZ!Box 7330 SL [#switchports_not_working]_
+
+.. [#switchports_not_working]
+  The switchports on these devices are not working properly (`#1943 <https://github.com/freifunk-gluon/gluon/issues/1943>`_)
+
+Bugfixes
+--------
+
+- Fixes a bug in the tunneldigger watchdog where the watchdog would incorrectly find itself while looking up the running tunneldigger process. It then went on and assumed a PID mismatch between the tunneldigger service and its PID file and therefore caused an unnecessary restart of the tunnel. (`#1952 <https://github.com/freifunk-gluon/gluon/issues/1952>`_)
+
+- Fixes an oversight in the firewalling of the respondd service where queries from prefix listed in ``extra_prefixes6`` would be dropped. (`#1941 <https://github.com/freifunk-gluon/gluon/issues/1941>`_)
+
+- Fixes a bug in ``gluon-web`` where forms would not correctly update their field visibility on reset. This affected, for example, the private wifi page in the config mode. (`#1970 <https://github.com/freifunk-gluon/gluon/pull/1970>`_)
+
+- Fixes RX buffer sizing in the ath10k driver to allow for frames larger than 1528 Bytes. (`#1992 <https://github.com/freifunk-gluon/gluon/pull/1992>`_)
+
+- Fixes a regression in the v4.14 kernel where spurious data bus errors on ar71xx devices would cause a reboot. (`#1994 <https://github.com/freifunk-gluon/gluon/pull/1994>`_)
+
+
+Other changes
+-------------
+
+- Linux kernel has been updated to 4.14.176
+
+
+Internals
+---------
+
+- OpenWrt 19.07 introduced the urngd entropy daemon that serves the same function as the haveged service, which we have been recommending. To not have two redundant entropy daemons in this release we remove urngd in favor of haveged in the v2020.1 release series.
+
+Known issues
+------------
+
+- High chance of ending in a soft-bricked state for Ubiquiti EdgeRouter-X. Workaround is to
+  repeat initial installation using the serial console. (`#1937 <https://github.com/freifunk-gluon/gluon/issues/1937>`_)
+
+- Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+- The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+- Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+- The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+- Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+
+- Frequent reboots due to out-of-memory or high load due to memory pressure on weak hardware especially in larger
+  meshes (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.
+

docs/releases/v2020.1.3.rst

+Gluon 2020.1.3
+==============
+
+Bugfixes
+--------
+
+- Fixes a bug in musl which can lead to spurious crashes in fastd and other programs, which alternate between single-
+  and multi-threaded operation. (`#2029 <https://github.com/freifunk-gluon/gluon/issues/2029>`_)
+
+- Fixes a regression which led to around 2.5 MiB higher memory usage for ar71xx-tiny and ramips-rt305x targets.
+  While this decreases the memory usage, the image will become around 64KiB larger. (`#2032 <https://github.com/freifunk-gluon/gluon/issues/2032>`_)
+
+- Fixes a bug which can cause the TP-Link TL-MR3020 v1 to become stuck in failsafe mode.
+
+
+Other changes
+-------------
+
+- Linux kernel has been updated to 4.14.180
+
+
+Known issues
+------------
+
+- High chance of ending in a soft-bricked state for Ubiquiti EdgeRouter-X. Workaround is to
+  repeat initial installation using the serial console. (`#1937 <https://github.com/freifunk-gluon/gluon/issues/1937>`_)
+
+- Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+- The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+- Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+- The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+- Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+

docs/releases/v2020.1.4.rst

+Gluon 2020.1.4
+==============
+
+Added hardware support
+----------------------
+
+- Added support for TP-Link CPE210 3.20 (`#2080 <https://github.com/freifunk-gluon/gluon/issues/2080>`_)
+
+Bugfixes
+--------
+
+- Fixed a rare race-condition during mesh interface teardown (`#2057 <https://github.com/freifunk-gluon/gluon/pull/2057>`_)
+
+- Fixed handling of mesh interfaces together with outdoor mode, site.conf defaults and config mode (`#2049 <https://github.com/freifunk-gluon/gluon/pull/2049>`_) (`#2054 <https://github.com/freifunk-gluon/gluon/pull/2054>`_)
+
+Other changes
+-------------
+
+- Linux kernel has been updated to 4.14.193
+- Backports of batman-adv bugfixes
+
+Known issues
+------------
+
+* Upgrading EdgeRouter-X from versions before v2020.1.x may lead to a soft-bricked state due to bad blocks on the
+  NAND flash which the NAND driver before this release does not handle well.
+  (`#1937 <https://github.com/freifunk-gluon/gluon/issues/1937>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+    This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).

docs/releases/v2020.1.rst

+Gluon 2020.1
+============
+
+This is the first release of Gluon in 2020, based on OpenWrt 19.07. It
+introduces the ath79 target, which will replace ar71xx in the short
+term.
+
+Added hardware support
+----------------------
+
+ath79-generic
+~~~~~~~~~~~~~
+
+- devolo WiFi pro 1200e
+- devolo WiFi pro 1200i
+- devolo WiFi pro 1750c
+- devolo WiFi pro 1750e
+- devolo WiFi pro 1750i
+- devolo WiFi pro 1750x
+- GL.iNet GL-AR300M-Lite
+- Ocedo Raccoon
+- TP-Link Archer C6 v2
+
+ipq40xx-generic
+~~~~~~~~~~~~~~~
+
+- Aruba AP-303
+- Aruba Instant On AP11
+- AVM FRITZ!Repeater 1200
+
+ipq806x-generic
+~~~~~~~~~~~~~~~
+
+- Netgear R7800
+
+lantiq-xway
+~~~~~~~~~~~
+
+- AVM FRITZ!Box 7312
+- AVM FRITZ!Box 7320
+- AVM FRITZ!Box 7330
+- AVM FRITZ!Box 7330 SL
+
+lantiq-xrx200
+~~~~~~~~~~~~~
+
+- AVM FRITZ!Box 7360 (v1, v2)
+- AVM FRITZ!Box 7360 SL
+- AVM FRITZ!Box 7362 SL
+- AVM FRITZ!Box 7412
+
+mpc85xx-p1020
+~~~~~~~~~~~~~
+
+- Enterasys WS-AP3710i
+- Ocedo Panda
+
+ramips-mt7620
+~~~~~~~~~~~~~
+
+- TP-Link Archer C2 (v1)
+- TP-Link Archer C20 (v1)
+- TP-Link Archer C20i
+- TP-Link Archer C50 (v1)
+- Xiaomi MiWifi Mini
+
+ramips-mt7621
+~~~~~~~~~~~~~
+
+- Netgear EX6150 (v1)
+- Netgear R6220
+
+ramips-mt76x8
+~~~~~~~~~~~~~
+
+- GL.iNet VIXMINI
+- TP-Link TL-MR3020 (v3)
+- TP-Link TL-WA801ND (v5)
+- TP-Link TL-WR902AC (v3)
+
+Removed hardware support
+------------------------
+
+- ALFA Network Hornet-UB [#kernelpartition_too_small]_
+- ALFA Network Tube2H [#kernelpartition_too_small]_
+- ALFA Network N2 [#kernelpartition_too_small]_
+- ALFA Network N5 [#kernelpartition_too_small]_
+
+.. [#kernelpartition_too_small]
+  The kernel partition on this device is too small to build a working image.
+
+Major changes
+-------------
+
+OpenWrt 19.07
+~~~~~~~~~~~~~
+
+Gluon v2020.1 is the first release to use OpenWrt 19.07. All targets
+therefore use Linux 4.14.166.
+
+batman-adv compat v14 removal
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Support for the long deprecated compat 14 version of batman-adv has been
+dropped. Communities still using this version should migrate to batman-adv
+using the scheduled domain switch.
+
+IBSS wireless mesh removal
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Support for the IBSS wireless protocol has been dropped. Communities
+still using IBSS are suggested to migrate to 802.11s using the scheduled
+domain switch.
+
+Performance enhancements
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+We install zram-swap by default on ``ar71xx`` devices with 8MB of flash
+and 32MB of RAM.
+
+Renamed targets
+~~~~~~~~~~~~~~~
+
+- The ``ipq40xx`` target was renamed to ``ipq40xx-generic``.
+- The ``ipq806x`` target was renamed to ``ipq806x-generic``.
+
+Status Page
+~~~~~~~~~~~
+
+- Gateway nexthop information has been added to the status page when batman-adv
+  is used. This includes its MAC address and prettyname as well as the interface
+  name towards the selected gateway.
+- The site name has been added to the status page. If the node is in a multidomain
+  setup it will also show the domain name.
+
+DECT button to enter config mode
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Many AVM devices don't feature a separate RESET/WPS button, therefore
+starting this release we support entering the config mode via DECT buttons.
+
+X86 partition size
+~~~~~~~~~~~~~~~~~~
+
+The x86 partition size has been reduced to fit on disks with a capacity of 128 MB.
+
+Bugfixes
+--------
+
+Autoupdater aliases
+~~~~~~~~~~~~~~~~~~~
+
+We have added several new aliases for autoupdater compatibility on
+the following devices:
+
+- Ubiquiti UniFi AC LR
+- Raspberry Pi
+
+Site changes
+------------
+
+site.mk
+~~~~~~~
+
+- The ``GLUON_WLAN_MESH`` variable can be dropped, as 802.11s is
+  the only supported wireless transport from now on.
+
+Internals
+---------
+
+Linting Targets
+~~~~~~~~~~~~~~~
+
+Support for linter make targets was added.
+
+- ``make lint``
+- ``make lint-sh`` to only check shell scripts
+- ``make lint-lua`` to only check lua scripts
+
+These require the shellcheck and luacheck tools. The docker image has
+been updated accordingly.
+
+Continuous integration
+~~~~~~~~~~~~~~~~~~~~~~
+
+We have implemented continuous integration testing using Jenkins and thereby
+ensure that all lua and shell scripts are linted, that the documentation
+still builds and warnings are highlighted, and that Gluon still
+compiles, by testing a build on the ``x86_64`` target. We expect this to
+significantly improve the feedback cycle and quality of contributions.
+
+Known issues
+************
+
+* Upgrading EdgeRouter-X from versions before v2020.1.x may lead to a soft-bricked state due to bad blocks on the
+  NAND flash which the NAND driver before this release does not handle well.
+  (`#1937 <https://github.com/freifunk-gluon/gluon/issues/1937>`_)
+
+* LEDs on TP-Link Archer C5 v1 and Archer C7 v2 are not working after Upgrade to v2020.1
+  (`#1941 <https://github.com/freifunk-gluon/gluon/issues/1941>`_)
+
+* AVM FRITZ!WLAN Repeater 450E is stuck in failsafe mode. (`#1940 <https://github.com/freifunk-gluon/gluon/issues/1940>`_)
+
+* Out of memory situations with high client count on ath9k.
+  (`#1768 <https://github.com/freifunk-gluon/gluon/issues/1768>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+
+    This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).
+
+* Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.
+
+* Frequent reboots due to out-of-memory or high load due to memory pressure on weak hardware especially in larger
+  meshes (`#1243 <https://github.com/freifunk-gluon/gluon/issues/1243>`_)
+
+  Optimizations in Gluon 2018.1 have significantly improved memory usage.
+  There are still known bugs leading to unreasonably high load that we hope to
+  solve in future releases.
+

docs/releases/v2020.2.1.rst

+Gluon 2020.2.1
+==============
+
+Added hardware support
+----------------------
+
+- Added support for TP-Link CPE210 3.20 (`#2080 <https://github.com/freifunk-gluon/gluon/issues/2080>`_)
+
+Bugfixes
+--------
+
+- Fixed handling of *mesh_on_lan* enabled in site configuration (`#2090 <https://github.com/freifunk-gluon/gluon/issues/2090>`_)
+
+- Fixed build issues with lantiq-xrx200 target by removing unsupported DSL modem packages (`#2087 <https://github.com/freifunk-gluon/gluon/pull/2087>`_)
+
+Other changes
+-------------
+
+- Linux kernel has been updated to 4.14.193
+- Backports of batman-adv bugfixes
+
+Known issues
+------------
+
+* Upgrading EdgeRouter-X from versions before v2020.1.x may lead to a soft-bricked state due to bad blocks on the
+  NAND flash which the NAND driver before this release does not handle well.
+  (`#1937 <https://github.com/freifunk-gluon/gluon/issues/1937>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+  - Mesh neighbors don't appear on the status page. (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+    Many tools have the BATMAN_IV metric hardcoded, these need to be updated to account for the new throughput
+    metric.
+  - Throughput values are not correctly acquired for different interface types.
+    (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+    This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown
+  (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* In configurations not using VXLAN, the MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled
+  (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promiscuous mode is
+  disallowed).