Use arping to test upstream router connectivity when the router does not reply to pings

Reworked c-ares handling (fix for occasional CM crashes)

Fixed a problem with not including own channel in 802.11k neighbor reports

Fixed/enhanced logic in CM (improved stability)

Fixed a corner case that could cause topology changes to fail

Relaxed default UPnP port forwarding rules to allow ports below 1024

Fix for not removing an old port forwarding rule when a rule is modified

Fix for a FSM crash (potential ‘double free’ when misconfigured)

OVSDB schema was updated with fields added in newer releases of OVS

Handling of the Kconfig-driven target_managers_config table was changed so that it can be overridden from the vendor, platform, or 3rdparty layer

Fix for IPv6 address preferred lifetime not set correctly

Fixed processing of IPv6 RDNSS in case of multiple entries

Fix for DHCP options not applied immediately after being received

Fixed code logic for reporting the onboarding status

Fixed a potential ‘use after free’ problem when an FSM policy is removed

IPv6 support:

• schema changes for IPv6 (old tables are still used for IPv4)

• added a new layer (src/lib/osn) which replaces the inet_target API

• NM2 refactored

Infrastructure for inspection of data flows (deep packet inspection):

• added support for flow tags (FSM and plugins)

• schema updated to add support for IP threat detection

Infrastructure for collecting and reporting health statistics:

• IP and DNS monitoring counters: interfaces/ip_dns_telemetry.proto

• library: src/lib/network_telemetry

Infrastructure for collecting and reporting data flow statistics:

• added a new manager (FCM, or Flow Collection Manager)

• protobuf interface: interfaces/network_metadata.proto

• library: src/lib/network_metadata

Sample code for the new features:

• a sample DPI plugin for FSM: src/lib/fsm_demo_dpi_plugin

• sample code for generating and sending protobuf reports through MQTT added to src/lib/fsm_demo_plugin

Build system uses Kconfiglib to generate the necessary files for easier use of Kconfig

FSM no longer uses pcap as the plugin API

Additional FSM plugin libraries (for advanced device typing):

• DHCP (src/lib/dhcp_parse)

• DNS (src/lib/dns_parse)

• HTTP (src/lib/http_parse)

• UPNP (src/lib/upnp_parse)

Improved 802.11v and 802.11k steering mechanisms

DFS enhancements to improve its use in Multi-AP networks