The OpenWrt community is proud to announce the second release candidate of the upcoming OpenWrt 21.02 stable version series. It incorporates over 5800 commits since branching the previous OpenWrt 19.07 release and has been under development for about one and a half year.
Changes between OpenWrt 21.02.0-rc1 and 21.02.0-rc2
New network configuration syntax
There have been several changes to the network configuration syntax in /etc/config/network:
- in config interface, option ifname has been renamed to device (since it refers to a device section)
- in config device of type bridge, ifname has been renamed to ports
- for new installs, the generated configuration now creates separate sections for layer 2 (config device) and layer 3 (config interface) configuration
The old syntax is still supported to facilitate transition, and there is no automated migration when upgrading.
However, the LuCI web interface detects old-style configuration and will propose to migrate it to the new syntax. This is necessary to be able to edit network configuration through LuCI.
The new configuration style looks like this:
config device option name 'br-lan' option type 'bridge' option macaddr '00:01:02:XX:XX:XX' list ports 'lan1' list ports 'lan2' list ports 'lan3' list ports 'lan4' config interface 'lan' option device 'br-lan' option proto 'static' option ipaddr '192.168.1.1' option netmask '255.255.255.0' option ip6assign '60' config device option name 'eth1' option macaddr '00:01:02:YY:YY:YY' config interface 'wan' option device 'eth1' option proto 'dhcp' config interface 'wan6' option device 'eth1' option proto 'dhcpv6'
This example uses DSA with lanX interface names. A non-DSA device would use more classical ethX interface names.
LuCI has been updated to support the most recent network syntax (and migrate old config files if needed). In some cases migration will take 2 steps.
Support for configuring devices (config device UCI sections) was added. It can be used for setting layer 2 options (like MTU and MAC address). It also supports bridge devices (including VLAN tagging).
LuCI is now available over HTTPS in addition to HTTP in the default images.
After an upgrade from OpenWrt 19.07 to OpenWrt 21.02 unencrypted HTTP requests are redirected to HTTPS. On fresh OpenWrt 21.02 installations they are not redirected. Deactivate the redirect to HTTPS like this:
uci set uhttpd.main.redirect_https=0 uci commit uhttpd service uhttpd reload
- Linux kernel updated to version 5.4.119 (from 5.4.111 in v21.02.0-rc1)
- mac80211 updated to version 5.10.34-1 (from 5.10.16-1 in v21.02.0-rc1)
- mac80211 backport upstream fixes for the new FragAttacks vulnerabilities in 802.11
- mt76 updated to latest version
- dnsmasq updated to version 2.85 (from 2.84 in v21.02.0-rc1)
- busybox updated to version 1.33.1 (from 1.33.0 in v21.02.0-rc1)
- Linux kernel fix parsing fixed subpartitions
- Linux kernel Activate FORTIFY_SOURCE for MIPS kernel 5.4
- busybox add SRV support to nslookup_lede.c patch
- busybox disable PREFER_IPV4_ADDRESS
- openwrt-keyring only copy sign key for 21.02
- sdk, imagebuilder unset BINARY_FOLDER and DOWNLOAD_FOLDER in final archives
- uqmi fix network registration loop
- Lantiq DSL multiple backports for DSL statistics
- New devices MikroTik SXTsq 5 ac, MikroTik hAP ac2
- Device fixes for ALFA Network devices, Youku YK1, TP-Link AD7200,
TP-Link EAP-225, TP-Link TL-WR810N v1, MikroTik RB922UAGS-5HPaCD
- LuCI network migration tool doesn't migrate custom bridge MAC addresses. Custom device MAC has to be set again manually.
Full release notes and upgrade instructions are available at
In particular, make sure to read the regressions and known issues before upgrading:
For a detailed list of all changes since 21.02.0-rc1, refer to
To download the 21.02.0-rc2 images, navigate to:
To stay informed of new OpenWrt releases and security advisories, there
are new channels available:
a low-volume mailing list for important announcements: https://lists.openwrt.org/mailman/listinfo/openwrt-announce
a dedicated "announcements" section in the forum: https://forum.openwrt.org/c/announcements/14
other announcement channels (such as RSS feeds) might be added in the future, they will be listed at https://openwrt.org/contact
As always, a big thank you goes to all our active package maintainers, testers, documenters, and supporters.
The OpenWrt Community