OpenWrt 21.02.0 Fourth release candidate

[Hauke Mehrtens]

Hi,

The OpenWrt community is proud to announce the fourth 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-rc3 and 21.02.0-rc4

Software updates
  * Linux kernel: updated to version 5.4.137 (from 5.4.124 in
    v21.02.0-rc3)
  * mt76: Update to version 2021-06-06 (from 2021-05-15 in v21.02.0-rc3)
  * wireguard: Update with recent Linux stable fixes
  * exfat: Update to version 5.12.3 (from 5.10.1 in v21.02.0-rc3)

Misc changes
  * failsafe: Fixes failsafe network configuration with swconfig and DSA:
    FS#3866
  * odhcpd: fix invalid DHCPv6 ADVERTSIE with small configured leasetime
  * ugps: parse $GPZDA and $GPGLL sentences, improve interoperability
    with kplex
  * netifd: WDS with bridge-vlan fixed

Device support
  * New devices MikroTik RouterBOARD 912UAG-2HPnD and Joy-IT JT-OR750i
  * Device fixes for TP-Link CPE, MikroTik RouterBOARDs and
    AVM FRITZRepeater 1200

Known issues
  * Some packets from IPv6 streams are getting dropped in software and
    hardware flow offloading: FS#3373


Full release notes and upgrade instructions are available at
https://openwrt.org/releases/21.02/notes-21.02.0-rc4

In particular, make sure to read the regressions and known issues before 
upgrading:
https://openwrt.org/releases/21.02/notes-21.02.0-rc4#known_issues

For a detailed list of all changes since 21.02.0-rc3, refer to
https://openwrt.org/releases/21.02/changelog-21.02.0-rc4

To download the 21.02.0-rc4 images, navigate to:
https://downloads.openwrt.org/releases/21.02.0-rc4/

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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.

Have fun!

The OpenWrt Community