RRM does not update the default channel when using IPv6 only on the controller

What's New in Cisco IOS XE 17.15.4
There are no new features in this release.

Open Issues for Cisco IOS XE 17.15.4

• CSCwk79990: Controller encounters kernel unresponsiveness due to IntelResetRequest
• CSCwp14628: Cisco Aironet 3800 APs display client authentication issue after AP Migration to a controller running 17.15.3
• CSCwp20530: Controller does not forward downstream packets to the wireless client after switchover
• CSCwp27215: Cisco Catalyst 9124 AP in Mesh mode encounters poor iperf traffic performance
• CSCwp32113: Controller reloads due to kernel unresponsiveness with segmentation fault (11) in process IGMPSN
• CSCwp61179: Cisco Catalyst 9130 AP fails in port authentication with ClearPass Server
• CSCwp65769: Wave 2 APs performing with fast transition with 802.1X authentication send incorrect M2 message during re-key on session timeout
• CSCwo86312: Controller shows a mismatch between client counts from "show client" commands and SNMP walk totals
• CSCwo92511: Controller has inconsistent default MTU settings for mobility tunnels
• CSCwp07279: Controller unexpectedly reloads due to local software fatal error
• CSCwp39409: Controller reboots unexpectedly due to an assertion failure in WNCd process
• CSCwp93598: Memory leak found in the controller process related to handling a specific database string

Resolved Issues for Cisco IOS XE 17.15.4

• CSCwo98644: RRM does not update the default channel when using IPv6 only on the controller
• CSCwp59171: Users unable to add allowed user on Lobby admin page
• CSCwo89539: Controller reload unexpectedly when adding "location civic-location-id" to multiple interfaces
• CSCwn99763: Noise floor value is always displayed as 0 for a few x-paths
• CSCwo00821: IoT Orchestrator is unable to start after an upgrade or a reload
• CSCwp31397: Controller DFS Radar Detection results in most of the APs allocated to the same channel
• CSCwo62157: Controller with CAPWAP enabled display memory leak in tdl_mac_addr object
• CSCwn39428: Error message "Flow Monitor is Required" is shown even when flow monitor name is available
• CSCwp21187: Controller unexpectedly reboots due to due to mDNS packet
• CSCwo29017: wncmgrd kernel unresponsiveness after issue command ‘show ap config slots
• CSCwn92827: Secondary controller fails with rsync error
• CSCwo15982: Controller unexpectedly reboots with 17.15.3.14 image
• CSCwo54553: Controller displays traceback messages when default-policy-tag APs block initiates a configuration change for other APs due to Ref-count not zero
• CSCwp16968: 1562 WGB FT Roaming client disconnection issue due to MAC record Mismatch
• CSCwo07767: Controller's active chassis get stuck in active recovery state on 17.12.4
• CSCwn92477: Controller unexpectedly reboots during WNCd process due to assertion failure with invalid BSSID
• CSCwn90855: Controller overrides client's IP address in the device tracking database causing packet loss
• CSCwn94511: The factory-reset all command is unsecure but functions as if it has a secure option
• CSCwo97886: Controller display out of order packet issue with fragmented packet when AutoQOS is enabled
• CSCwo35645: NETCONF over SSH fails to return all the records for wireless-client-oper and shows 'invalid XML' before everything is returned
• CSCwp12959: Wireless client gets excluded with one authentication failure or never gets excluded
• CSCwn11160: Controller running in HA in guest anchor sends traffic to the wrong tunnel after switchover for already connected clients
• CSCwo37680: Controller initiates client deletion with code: CO_CLIENT_DELETE_REASON_DOT11_MAX_STA
• CSCwn96363: Remove redundant counters from "show wireless stats ap name <ap> dot11 5GHz" output
• CSCwo70030: WNCd process rogues even when bssid-neighbor-stats config is disabled
• CSCwn31021: Controller fails to represent the correct format of AP Name and VLAN ID in option 82
• CSCwo19011: Controller observes unexpected SISF reboot with WNCD core
• CSCwp25552: BSSID-mac dispatched as 00:00:00:00:00:00 for slot 1 WLAN 1
• CSCwn33501: Controller connected to the AP does not give any output while executing the #show ap summary sort name command
• CSCwp03988: Unexpected Reload Due to Unsuccessful copy of the MAC address
• CSCwo20395: Controller's rogue classification rules do not apply configured classifications
• CSCwo53638: Client error: High-availability data path setup failed on standby device in RA trace
• CSCwo61286: Audit session ID changes after inter-WNCd roam on Central Web Authentication (CWA) with PSK
• CSCwp26707: Controller fails to start L2 authentication for 11r clients with vlan-persitent configured in 17.12.5
• CSCwp86129: Client connected to local mac-auth PSK or MPSK SSIDs get disconnected and do not remain connected to the controller
• CSCwo98083: Access points are unreachable in inventory on Cisco Connected Cloud version 2.3.7.9
• CSCwo64967: Mobility tunnel with data-link encryption intermittently disconnects when the fourth octet of the WMI address is 255
• CSCwo41248: Controller display wrong message when configuring 2 radios on the same UNII band (100 - 144)
• CSCwo33572: Failed to collect RA tracing logs on Cisco IOS XE Release 17.9.5</ap>