OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Base system
  • Assigned To No-one
  • Operating System All
  • Severity Medium
  • Priority Very Low
  • Reported Version openwrt-19.07
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by scot-t - 11.04.2020

FS#2993 - Archer C7 v2 5GHz radio doesn't receive DHCPACK

Supply the following if possible:

Device problem occurs on

  • Archer C7 V2 (eu)

Software versions of OpenWrt/LEDE release, packages, etc.

Affects versions:

  • 19.07.0
  • 19.07.2

Tested working

  • 18.06.2
  • 18.06.8

Steps to reproduce

  1. Clean flash of 19.x sysupgrade image
  2. Enable 5ghz AP with default settings
  3. Connect to 5ghz with client

Observed Behaviour:

  • Client can authenticate
  • DHCP handshake initiated but not completed

Other notes:

  • If client also connected by ethernet, DHCPACK is received and connection successful. Client continues to have network access over wifi for ~15 seconds after disconnecting ethernet, then disassociates. See log #2.
  • Noticed 5ghz AP non-functional while investigating different issue where all 2.4g clients dropped until radio restarted.
  • Hopefully this is helpful, I am not sure how to debug any deeper than this.

Log 1 - logread during client connection attempts

	Sat Apr 11 11:10:21 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: authenticated
	Sat Apr 11 00:28:20 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:20 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:20 2020 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:20 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: disassociated
	Sat Apr 11 00:28:21 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
	Sat Apr 11 00:28:22 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: authenticated
	Sat Apr 11 00:28:22 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: associated (aid 2)
	Sat Apr 11 00:28:22 2020 daemon.notice hostapd: wlan0: AP-STA-CONNECTED 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:22 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc WPA: pairwise key handshake completed (RSN)
	Sat Apr 11 00:28:24 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:24 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:27 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:27 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:31 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:31 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:39 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:39 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:47 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:47 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:56 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:28:56 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:04 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:04 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:13 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:13 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:21 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:21 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:40 2020 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:40 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: disassociated
	Sat Apr 11 00:29:41 2020 daemon.info hostapd: wlan1: STA 6c:40:08:9f:5b:bc IEEE 802.11: authenticated
	Sat Apr 11 00:29:41 2020 daemon.info hostapd: wlan1: STA 6c:40:08:9f:5b:bc IEEE 802.11: associated (aid 8)
	Sat Apr 11 00:29:41 2020 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:41 2020 daemon.info hostapd: wlan1: STA 6c:40:08:9f:5b:bc WPA: pairwise key handshake completed (RSN)
	Sat Apr 11 00:29:41 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
	Sat Apr 11 00:29:42 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:42 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:43 2020 daemon.info dnsmasq-dhcp[7552]: DHCPREQUEST(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc
	Sat Apr 11 00:29:43 2020 daemon.info dnsmasq-dhcp[7552]: DHCPACK(br-lan) 192.168.12.240 6c:40:08:9f:5b:bc Scotts-MBP 

Log 2 - logread during connection with ethernet & subsequent disconnect

	Sat Apr 11 11:11:26 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: authenticated
	Sat Apr 11 11:11:26 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc IEEE 802.11: associated (aid 1)
	Sat Apr 11 11:11:26 2020 daemon.notice hostapd: wlan0: AP-STA-CONNECTED 6c:40:08:9f:5b:bc
	Sat Apr 11 11:11:26 2020 daemon.info hostapd: wlan0: STA 6c:40:08:9f:5b:bc WPA: pairwise key handshake completed (RSN)
	Sat Apr 11 11:12:36 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 5c:f7:e6:8b:bc:84
	Sat Apr 11 11:12:36 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.154 5c:f7:e6:8b:bc:84
	Sat Apr 11 11:12:36 2020 daemon.info dnsmasq-dhcp[7552]: DHCPDISCOVER(br-lan) 5c:f7:e6:8b:bc:84
	Sat Apr 11 11:12:36 2020 daemon.info dnsmasq-dhcp[7552]: DHCPOFFER(br-lan) 192.168.12.154 5c:f7:e6:8b:bc:84
	Sat Apr 11 11:12:37 2020 daemon.info dnsmasq-dhcp[7552]: DHCPREQUEST(br-lan) 192.168.12.154 5c:f7:e6:8b:bc:84
	Sat Apr 11 11:12:37 2020 daemon.info dnsmasq-dhcp[7552]: DHCPACK(br-lan) 192.168.12.154 5c:f7:e6:8b:bc:84 Scotts-MBP
	Sat Apr 11 11:12:45 2020 daemon.info dnsmasq-dhcp[7552]: DHCPRELEASE(br-lan) 192.168.12.154 5c:f7:e6:8b:bc:84 
scot-t commented on 11.04.2020 03:39

Also checked that multiple client devices (win10 / android 9) do experience same behaviour.

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