[FS#3873] Hostapd: Wlan1 (MT7613 gets disabled after restarting Radio1

[OpenWrt Bugs]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Amish Vishwakarma (amishv) 

Attached to Project - OpenWrt/LEDE Project
Summary - Hostapd: Wlan1 (MT7613 gets disabled after restarting Radio1
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on
       TP-Link Archer C6 v3 & 
       Linksys e5600
 - Software versions of OpenWrt/LEDE release, packages, etc.
       e5600 :https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/openwrt-ramips-mt7621-linksys_e5600-squashfs-factory.bin
       Archer C6V3: OpenWrt 21.02-SNAPSHOT r0-2c462a2 
 - Steps to reproduce
       Make changes to SSID/channel etc on the SSID of Radio1 and restart Radio 1 after reapplying the changes. The radio will be disabled after a few restart. Even, if the radio stays enable there is no output on 5G band, and can be verified by scanners like linSSID.

 The logs show

Sat Jun 12 19:18:21 2021 daemon.notice hostapd: wlan1: AP-STA-DISCONNECTED 
Sat Jun 12 19:18:21 2021 daemon.notice hostapd: wlan1: STA-OPMODE-N_SS-CHANGED  1
Sat Jun 12 19:18:21 2021 daemon.info hostapd: wlan1: STA  IEEE 802.11: authenticated
Sat Jun 12 19:18:21 2021 daemon.info hostapd: wlan1: STA  IEEE 802.11: associated (aid 1)
Sat Jun 12 19:18:21 2021 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 
Sat Jun 12 19:18:21 2021 daemon.info hostapd: wlan1: STA  RADIUS: starting accounting session F29691BFEF566F6D
Sat Jun 12 19:18:21 2021 daemon.info hostapd: wlan1: STA  WPA: pairwise key handshake completed (RSN)
Sat Jun 12 19:18:21 2021 daemon.notice hostapd: wlan1: EAPOL-4WAY-HS-COMPLETED 
***snip****
Sat Jun 12 19:18:44 2021 daemon.notice hostapd: Configuration file: /var/run/hostapd-phy1.conf (phy wlan1)
Sat Jun 12 19:18:44 2021 daemon.err hostapd: Interface name wlan1 already in use
Sat Jun 12 19:18:44 2021 daemon.notice netifd: radio1 (30801): Command failed: Invalid argument
Sat Jun 12 19:18:44 2021 daemon.notice netifd: radio1 (30801): Device setup failed: HOSTAPD_START_FAILED
Sat Jun 12 19:18:44 2021 kern.warn kernel: [346712.410330] IPv6: MLD: clamping QRV from 1 to 2!
Sat Jun 12 19:18:44 2021 daemon.notice netifd: radio1 (30916): WARNING: Variable 'data' does not exist or is not an array/object
Sat Jun 12 19:18:50 2021 kern.warn kernel: [346718.422284] IPv6: MLD: clamping QRV from 1 to 2!



More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3873

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