Wallys DR9074-6E(PN02.7) QCN9074 refuses to work on 6GHz band

Mariusz enebeo at gmail.com
Tue Nov 8 13:03:37 PST 2022


Another interesting finding is that while no client can see my test
6GHz network to connect to, there is in fact something happening over
the air. QCN9074 is transmitting beacon frames on the right frequency
which a remote AX210 client running on ubuntu can see and decode with
help of tshark & airodump. beacon counter is also increasing and
signal strength and AP up time look correct. That would mean QCN9074
switched the frequency correctly to 6GHz and attempts to work as an AP
but something is missing. I checked again regulatory domains and intel
picks up country but self-managed is within the scopeglobalcountry BE:
DFS-ETSI
phy#3 (self-managed)
country EU: DFS-UNSET

from airodump:
airodump-ng -C 6115 -i wlan0mon --bssid C4:4B:D1:D0:00:7E
Freq 6115 ][ Elapsed: 0 s ][ 2022-11-08 19:48
 BSSID              PWR  Beacons    #Data, #/s  CH   MB   ENC CIPHER  AUTH ESSID
 C4:4B:D1:D0:00:7E  -46       12        0    0  33   54e  WPA3 CCMP   SAE  dupa

from tshark
802.11 radio information
    PHY type: 802.11a (OFDM) (5)
    Turbo type: Non-turbo (0)
    Data rate: 6.0 Mb/s
    Channel: 33
    Frequency: 6115MHz
    Signal strength (dBm): -47 dBm
    TSF timestamp: 1826096995
    [Duration: 312µs]
        [Preamble: 20µs]
        [IFS: 204488µs]
        [Start: 1826096683µs]
        [End: 1826096995µs]

Why it mentions OFDM not OFDMA?

Other than that it gets SSID, operating class (I played with
20/80/160MHz hence 134 instead of 133), got the country code from the
AP so it is receiving something.

Tagged parameters (175 bytes)
        Tag: SSID parameter set: dupa
            Tag Number: SSID parameter set (0)
            Tag length: 4
            SSID: dupa
        Tag: Supported Rates 6(B), 9, 12(B), 18, 24(B), 36, 48, 54, [Mbit/sec]
            Tag Number: Supported Rates (1)
            Tag length: 8
            Supported Rates: 6(B) (0x8c)
            Supported Rates: 9 (0x12)
            Supported Rates: 12(B) (0x98)
            Supported Rates: 18 (0x24)
            Supported Rates: 24(B) (0xb0)
            Supported Rates: 36 (0x48)
            Supported Rates: 48 (0x60)
            Supported Rates: 54 (0x6c)
        Tag: DS Parameter set: Current Channel: 33
            Tag Number: DS Parameter set (3)
            Tag length: 1
            Current Channel: 33
        Tag: Traffic Indication Map (TIM): DTIM 1 of 2 bitmap
            Tag Number: Traffic Indication Map (TIM) (5)
            Tag length: 4
            DTIM count: 1
            DTIM period: 2
            Bitmap control: 0x00
                .... ...0 = Multicast: False
                0000 000. = Bitmap Offset: 0x00
            Partial Virtual Bitmap: 00
        Tag: Country Information: Country Code BE, Environment 0x04
            Tag Number: Country Information (7)
            Tag length: 6
            Code: BE
            Environment: 4
            Country Info: Operating Extension Identifier: 201,
Operating Class: 134, Coverage Class: 0
                Operating Extension Identifier: 201
                Operating Class: 134
                Coverage Class: 0
        Tag: RSN Information
            Tag Number: RSN Information (48)
            Tag length: 20
            RSN Version: 1
            Group Cipher Suite: 00:0f:ac (Ieee 802.11) AES (CCM)
                Group Cipher Suite OUI: 00:0f:ac (Ieee 802.11)
                Group Cipher Suite type: AES (CCM) (4)
            Pairwise Cipher Suite Count: 1
            Pairwise Cipher Suite List 00:0f:ac (Ieee 802.11) AES (CCM)
                Pairwise Cipher Suite: 00:0f:ac (Ieee 802.11) AES (CCM)
                    Pairwise Cipher Suite OUI: 00:0f:ac (Ieee 802.11)
                    Pairwise Cipher Suite type: AES (CCM) (4)
            Auth Key Management (AKM) Suite Count: 1
            Auth Key Management (AKM) List 00:0f:ac (Ieee 802.11) SAE (SHA256)
                Auth Key Management (AKM) Suite: 00:0f:ac (Ieee
802.11) SAE (SHA256)
                    Auth Key Management (AKM) OUI: 00:0f:ac (Ieee 802.11)
                    Auth Key Management (AKM) type: SAE (SHA256) (8)
            RSN Capabilities: 0x00cc
                .... .... .... ...0 = RSN Pre-Auth capabilities:
Transmitter does not support pre-authentication
                .... .... .... ..0. = RSN No Pairwise capabilities:
Transmitter can support WEP default key 0 simultaneously with Pairwise
key
                .... .... .... 11.. = RSN PTKSA Replay Counter
capabilities: 16 replay counters per PTKSA/GTKSA/STAKeySA (0x3)
                .... .... ..00 .... = RSN GTKSA Replay Counter
capabilities: 1 replay counter per PTKSA/GTKSA/STAKeySA (0x0)
                .... .... .1.. .... = Management Frame Protection Required: True
                .... .... 1... .... = Management Frame Protection Capable: True
                .... ...0 .... .... = Joint Multi-band RSNA: False
                .... ..0. .... .... = PeerKey Enabled: False
                ..0. .... .... .... = Extended Key ID for Individually


On Mon, 7 Nov 2022 at 19:57, Mariusz <enebeo at gmail.com> wrote:
>
> Hi!
>
> To start I am trying to use it as SoftAP not a 6E client. I did some
> research and in part this issue appears to be due to a wrong board_id.
> It is set to 0xff = 255 which is not loading 6GHz firmware but a
> default 255 firmware from board-2.bin blob. I extracted from
> board-2.bin firmware for board 162 and renamed it to board.bin. Now
> the module is loading firmware with Band 4 and 6GHz channels. But it
> would be too beautiful that it works right away, so it is pretending
> to be working but when set to mode master (SoftAP) in hostapd, none of
> my Intel AX210 160Mhz client is able to see this ssid. I am attaching
> what I have collected so far.
>
> 1.
> root at s4:/usr/lib/modules/5.19.
> 0-23-generic/kernel/drivers/net/wireless/ath/ath11k#
> rmmod ath11k_pci
> root at s4:/usr/lib/modules/5.19.0-23-generic/kernel/drivers/net/wireless/ath/ath11k#
> rmmod ath11k
> root at s4:/usr/lib/modules/5.19.0-23-generic/kernel/drivers/net/wireless/ath/ath11k#
> insmod ath11k.ko debug_mask=0x212
> root at s4:/usr/lib/modules/5.19.0-23-generic/kernel/drivers/net/wireless/ath/ath11k#
> insmod ath11k_pci.ko
>
> 2.
> Nov  7 18:01:08 s4 systemd[1]: systemd-rfkill.service: Deactivated successfully.
> Nov  7 18:01:29 s4 kernel: [ 3734.630406] ath11k_pci 0000:01:00.0: BAR
> 0: assigned [mem 0xf7c00000-0xf7dfffff 64bit]
> Nov  7 18:01:29 s4 kernel: [ 3734.630515] ath11k_pci 0000:01:00.0: MSI
> vectors: 1
> Nov  7 18:01:29 s4 kernel: [ 3734.630522] ath11k_pci 0000:01:00.0: qcn9074 hw1.0
> Nov  7 18:01:29 s4 kernel: [ 3734.784909] mhi mhi0: Requested to power ON
> Nov  7 18:01:29 s4 kernel: [ 3734.785124] mhi mhi0: Power on setup success
> Nov  7 18:01:29 s4 kernel: [ 3734.886704] mhi mhi0: Wait for device to
> enter SBL or Mission mode
> Nov  7 18:01:29 s4 kernel: [ 3735.257623] ath11k_pci 0000:01:00.0:
> chip_id 0x0 chip_family 0x0 board_id 0xff soc_id 0xffffffff
> Nov  7 18:01:29 s4 kernel: [ 3735.257638] ath11k_pci 0000:01:00.0:
> fw_version 0x250a04b8 fw_build_timestamp 2021-12-20 06:41 fw_build_id
> Nov  7 18:01:31 s4 kernel: [ 3736.587053] ath11k_pci 0000:01:00.0:
> leaving PCI ASPM disabled to avoid MHI M2 problems
> Nov  7 18:01:31 s4 kernel: [ 3736.933304] ath11k_pci 0000:01:00.0
> wlp1s0: renamed from wlan0
> Nov  7 18:01:31 s4 systemd[1]: Starting Load/Save RF Kill Switch Status...
> Nov  7 18:01:31 s4 systemd[1]: Started Load/Save RF Kill Switch Status.
> Nov  7 18:01:31 s4 systemd-networkd[711]: wlan0: Interface name change
> detected, renamed to wlp1s0.
> Nov  7 18:01:34 s4 ModemManager[824]: <info>  [base-manager] couldn't
> check support for device
> '/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0': not supported by
> any plugin
> Nov  7 18:01:36 s4 systemd[1]: systemd-rfkill.service: Deactivated successfully.
> Nov  7 18:10:08 s4 systemd-networkd[711]: wlp1s0: Link UP
> Nov  7 18:10:11 s4 systemd-networkd[711]: wlp1s0: Gained carrier
> Nov  7 18:10:11 s4 kernel: [ 4257.237326] IPv6:
> ADDRCONF(NETDEV_CHANGE): wlp1s0: link becomes ready
> Nov  7 18:10:13 s4 systemd-networkd[711]: wlp1s0: Gained IPv6LL
> Nov  7 18:11:32 s4 systemd-networkd[711]: wlp1s0: Lost carrier
> Nov  7 18:11:32 s4 systemd-networkd[711]: wlp1s0: Link DOWN
> Nov  7 18:11:37 s4 systemd-networkd[711]: wlp1s0: Link UP
> Nov  7 18:11:40 s4 systemd-networkd[711]: wlp1s0: Gained carrier
> Nov  7 18:11:40 s4 kernel: [ 4346.125158] IPv6:
> ADDRCONF(NETDEV_CHANGE): wlp1s0: link becomes ready
> Nov  7 18:11:42 s4 systemd-networkd[711]: wlp1s0: Gained IPv6LL
>
>
> 3.
>
> root at s4:/home/angel/hostapd-2.10/hostapd# iw dev
> phy#2
>         Interface wlp1s0
>                 ifindex 7
>                 wdev 0x200000001
>                 addr c4:4b:d1:d0:00:7e
>                 ssid test
>                 type AP
>                 channel 33 (6115 MHz), width: 80 MHz, center1: 6145 MHz
>                 txpower 30.00 dBm
>
> root at s4:/usr/lib/modules/5.19.0-23-generic/kernel/drivers/net/wireless/ath/ath11k#
> iw phy2 channels
> Band 4:
>         * 5955 MHz [1]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 5975 MHz [5]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 5995 MHz [9]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6015 MHz [13]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6035 MHz [17]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6055 MHz [21]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6075 MHz [25]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6095 MHz [29]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6115 MHz [33]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6135 MHz [37]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6155 MHz [41]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6175 MHz [45]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6195 MHz [49]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6215 MHz [53]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6235 MHz [57]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6255 MHz [61]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6275 MHz [65]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6295 MHz [69]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6315 MHz [73]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6335 MHz [77]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6355 MHz [81]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6375 MHz [85]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6395 MHz [89]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6415 MHz [93]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6435 MHz [97]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6455 MHz [101]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6475 MHz [105]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6495 MHz [109]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6515 MHz [113]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6535 MHz [117]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6555 MHz [121]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6575 MHz [125]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6595 MHz [129]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6615 MHz [133]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6635 MHz [137]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6655 MHz [141]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6675 MHz [145]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6695 MHz [149]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6715 MHz [153]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6735 MHz [157]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6755 MHz [161]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6775 MHz [165]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6795 MHz [169]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6815 MHz [173]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6835 MHz [177]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6855 MHz [181]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6875 MHz [185]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6895 MHz [189]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6915 MHz [193]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6935 MHz [197]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6955 MHz [201]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6975 MHz [205]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 6995 MHz [209]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 7015 MHz [213]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 7035 MHz [217]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 7055 MHz [221]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 7075 MHz [225]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 7095 MHz [229]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 7115 MHz [233]
>           Maximum TX power: 30.0 dBm
>           Channel widths: 20MHz
>         * 5935 MHz [2] (disabled)
>
> 4.
> Now with hostapd pretending to work, it does not error out on 6GHz
> freq anymore, it starts on channel 33 but no client can see it
>
> root at s4:/home/angel/hostapd-2.10/hostapd# ./hostapd hostapd.conf&
> [1] 2008
> root at s4:/home/angel/hostapd-2.10/hostapd# wlp1s0: interface state
> UNINITIALIZED->COUNTRY_UPDATE
> ACS: Automatic channel selection started, this may take a bit
> wlp1s0: interface state COUNTRY_UPDATE->ACS
> wlp1s0: ACS-STARTED
> wlp1s0: ACS-COMPLETED freq=6115 channel=33
> wlp1s0: interface state ACS->ENABLED
> wlp1s0: AP-ENABLED
>
> Should work, no?
>
> 5. and the config
> root at s4:/home/angel/hostapd-2.10/hostapd# cat hostapd.conf | grep -v
> '^#' | grep . | more
> interface=wlp1s0
> driver=nl80211
> logger_syslog=-1
> logger_syslog_level=2
> logger_stdout=-1
> logger_stdout_level=2
> ctrl_interface=/var/run/hostapd
> ctrl_interface_group=0
> ssid=test
> country_code=BE
> ieee80211d=1
> ieee80211h=1
> hw_mode=a
> channel=0
> op_class=133
> acs_num_scans=1
> beacon_int=100
> dtim_period=2
> max_num_sta=255
> rts_threshold=-1
> fragm_threshold=-1
> macaddr_acl=0
> ieee80211w=2
> auth_algs=3
> ignore_broadcast_ssid=0
> wmm_enabled=1
> wmm_ac_bk_cwmin=4
> wmm_ac_bk_cwmax=10
> wmm_ac_bk_aifs=7
> wmm_ac_bk_txop_limit=0
> wmm_ac_bk_acm=0
> wmm_ac_be_aifs=3
> wmm_ac_be_cwmin=4
> wmm_ac_be_cwmax=10
> wmm_ac_be_txop_limit=0
> wmm_ac_be_acm=0
> wmm_ac_vi_aifs=2
> wmm_ac_vi_cwmin=3
> wmm_ac_vi_cwmax=4
> wmm_ac_vi_txop_limit=94
> wmm_ac_vi_acm=0
> wmm_ac_vo_aifs=2
> wmm_ac_vo_cwmin=2
> wmm_ac_vo_cwmax=3
> wmm_ac_vo_txop_limit=47
> wmm_ac_vo_acm=0
> ieee80211ax=1
> eapol_key_index_workaround=0
> eap_server=0
> own_ip_addr=127.0.0.1
> wpa=2
> wpa_key_mgmt=SAE
> rsn_pairwise=CCMP
> group_cipher=CCMP
> sae_password=testtest
> sae_require_mfp=1
> sae_pwe=1
>
> Client, windows 11, country BE, lower 6E bands are approved for use
> per regulatory domain, Intel AX210 160MHz, latest driver:22.170.0.
>
> Physically external 5V power is connected as well as 4x antenna
> pigtails and external antennas (5dbi).
>
> Any light on this welcome & thanks for taking the time! There's
> nothing else in the logs past this point.
>
> M
>
> On Mon, 7 Nov 2022 at 17:07, Nagarajan Maran (QUIC)
> <quic_nmaran at quicinc.com> wrote:
> >
> > Hi Mariusz,
> >
> > We are looking into this issue. It seems that this error can occur when the given frequency is not present or when the given frequency is disabled.
> > To further analyze the issue, could you kindly let us know the output of the below commands during failure case.
> >      1) iw dev
> >      2) iw phyX channels
> >
> > Also, could you kindly send the WiFi driver boot up logs with "debug_mask=0x212" enabled during insmod of ath11k.ko module.
> >
> > Thanks,
> > Nagarajan M.
> >
> > -----Original Message-----
> >
> > From: Mariusz <enebeo at gmail.com>
> > To: ath11k at lists.infradead.org
> > Subject: Wallys DR9074-6E(PN02.7) QCN9074 refuses to work on 6GHz band
> > Message-ID:
> >         <CAJrE-q6NVEF4sNW1s4Zz7Pb2ryzCi69e+_vLQswBWm747DHYDw at mail.gmail.com>
> > Content-Type: text/plain; charset="UTF-8"
> >
> > Hi,
> >
> > As support for QCN9074 got better I went ahead and built a 6E linux based AP. Dell R720 server x86 running Linux s4 5.19.0-23-generic #24-Ubuntu SMP PREEMPT_DYNAMIC Fri Oct 14 15:39:57 UTC 2022 x86_64
> > x86_64 x86_64 GNU/Linux.
> >
> > My issue is that I cannot get it working on 6GHz bands but it works fine on 5GHz. I bought 6E version  and since this is a single band module it cannot be both 5G & 6G and linux driver does not agree with it being 6E version:
> >
> > [71914.038562] ath11k_pci 0000:03:00.0: BAR 0: assigned [mem 0xdf800000-0xdf9fffff 64bit] [71914.038840] ath11k_pci 0000:03:00.0: MSI vectors: 16 [71914.038852] ath11k_pci 0000:03:00.0: qcn9074 hw1.0 [71914.194459] mhi mhi0: Requested to power ON [71914.194712] mhi mhi0: Power on setup success [71914.297749] mhi mhi0: Wait for device to enter SBL or Mission mode [71914.647118] ath11k_pci 0000:03:00.0: chip_id 0x0 chip_family 0x0 board_id 0xff soc_id 0xffffffff [71914.647134] ath11k_pci 0000:03:00.0: fw_version 0x250a04b8 fw_build_timestamp 2021-12-20 06:41 fw_build_id [71916.310787] ath11k_pci 0000:03:00.0 wlp3s0: renamed from wlan0
> >
> > HE PHY Capabilities: (0x1c604c88ffdb839c110c00):
> >                                 HE40/HE80/5GHz
> >                                 HE160/5GHz
> >                                 HE160/HE80+80/5GHz
> >
> > iw dev wlp3s0 set freq 6195 160MHz
> > kernel reports: Channel is disabled
> > command failed: Invalid argument (-22)
> >
> > I am using the latest firmware files from ath11k tree. Is there any special firmware to force this to 6GHz? I read somewhere board_id determines which one it is and 255 disables 6GHz but I miss more data on that.
> >
> > phy#2 (self-managed)
> > country US: DFS-FCC
> >         (2402 - 2472 @ 40), (6, 30), (N/A)
> >         (5170 - 5250 @ 80), (N/A, 30), (N/A), AUTO-BW
> >         (5250 - 5330 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW
> >         (5490 - 5730 @ 160), (N/A, 24), (0 ms), DFS, AUTO-BW
> >         (5735 - 5895 @ 160), (N/A, 30), (N/A), AUTO-BW
> >         (5945 - 7125 @ 160), (N/A, 30), (N/A), NO-OUTDOOR, AUTO-BW
> >
> > It works fine in 5GHz but this is not what I purchased it for, so I am puzzled if this is something in software or I was sold wrong hardware.Is there a specific board-2.bin for 6GHz? Since the 9074 chip is the same in all versions perhaps this is a software hiccup.
> >
> > Any clues are welcome.
> >
> > Regards,
> > Mario
> >



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