[FS#4068] ath9k: Placeholder MAC address set on wireless device on Lantiq XRX200 (AVM FRITZ!Box 7430) (Attachment added)

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Thu Oct 7 07:10:03 PDT 2021


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User who did this - Kevin (doesnotcompete) 

Attached to Project - OpenWrt/LEDE Project
Summary - ath9k: Placeholder MAC address set on wireless device on Lantiq XRX200 (AVM FRITZ!Box 7430)
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - openwrt-21.02
Due in Version - Undecided
Due Date - Undecided
Details - I am encountering issues with the wifi device on AVM FRITZ!Box 7430. The MAC address of the adapter is set to a placeholder value:

# ip link
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0:  mtu 1500 qdisc fq_codel state UP qlen 1000
    link/ether [REDACTED] brd ff:ff:ff:ff:ff:ff
4: br-lan:  mtu 1500 qdisc noqueue state UP qlen 1000
    link/ether [REDACTED] brd ff:ff:ff:ff:ff:ff
5: eth0.1 at eth0:  mtu 1500 qdisc noqueue master br-lan state UP qlen 1000
    link/ether [REDACTED] brd ff:ff:ff:ff:ff:ff
7: wlan0:  mtu 1500 qdisc noqueue master br-lan state UP qlen 1000
    link/ether 00:02:03:04:05:06 brd ff:ff:ff:ff:ff:ff

This issue was reproducable on two separate devices, both with the 21.0.2 release (no matter whether the image was pre-built or self-compiled) and the latest SNAPSHOT image. fritz_tffs_nand -d /dev/mtd1 -n macwlan is able to read the correct MAC address from flash however. Attempts to reconfigure the MAC address during runtime with "ip" or by adding the "macaddr" option to /etc/config/wireless were not successful.
I am trying to built a mesh network with multiple FRITZ!Box 7430 devices and the identical BSSID used by them seems to cause on the client network. I have no experience in developing drivers, but am comfortable in compiling OpenWrt from source. Does anyone have an idea on where I could start looking into this issue? I am not sure how the wireless device is configured with its MAC address during boot-up, but would be glad to try any suggestions on how this placeholder value could be overriden. I've attached a log showing the boot process.

One or more files have been attached.

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4068

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