Above is the 'lsusb -v' result, just after the WAN connection failed, many "can't get debug descriptor: Resource temporarily unavailable" errors ...
Dmesg:
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd083]
[ 0.000000] Linux version 5.4.154 (builder@buildhost) (gcc version 8.4.0 (OpenWrt GCC 8.4.0 r16325-88151b8303)) #0 SMP Sun Oct 24 09:01:35 2021
[ 0.000000] Machine model: Raspberry Pi 4 Model B Rev 1.2
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000002ac00000, size 64 MiB
[ 0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[ 0.000000] On node 0 totalpages: 1012736
[ 0.000000] DMA zone: 3792 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 242688 pages, LIFO batch:63
[ 0.000000] DMA32 zone: 12032 pages used for memmap
[ 0.000000] DMA32 zone: 770048 pages, LIFO batch:63
[ 0.000000] percpu: Embedded 21 pages/cpu s45336 r8192 d32488 u86016
[ 0.000000] pcpu-alloc: s45336 r8192 d32488 u86016 alloc=21*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[ 0.000000] Detected PIPT I-cache on CPU0
[ 0.000000] CPU features: detected: EL2 vector hardening
[ 0.000000] ARM_SMCCC_ARCH_WORKAROUND_1 missing from firmware
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 996912
[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=0 bcm2708_fb.fbheight=0 bcm2708_fb.fbswap=1 smsc95xx.macaddr=DC:A6:32:78:5F:57 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=squashfs,ext4 rootwait
[ 0.000000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] software IO TLB: mapped [mem 0x37400000-0x3b400000] (64MB)
[ 0.000000] Memory: 3829424K/4050944K available (7102K kernel code, 432K rwdata, 1144K rodata, 512K init, 541K bss, 155984K reserved, 65536K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] rcu: CONFIG_RCU_FANOUT set to non-default value of 32.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] GIC: Using split EOI/Deactivate mode
[ 0.000000] random: get_random_bytes called from 0xffffffc0108a0b98 with crng_init=0
[ 0.000000] arch_timer: cp15 timer(s) running at 54.00MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0xc743ce346, max_idle_ns: 440795203123 ns
[ 0.000002] sched_clock: 56 bits at 54MHz, resolution 18ns, wraps every 4398046511102ns
[ 0.000074] Console: colour dummy device 80x25
[ 0.000169] printk: console [tty1] enabled
[ 0.000186] Calibrating delay loop (skipped), value calculated using timer frequency.. 108.00 BogoMIPS (lpj=216000)
[ 0.000195] pid_max: default: 32768 minimum: 301
[ 0.000312] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.000376] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.000706] cgroup: Disabling memory control group subsystem
[ 0.001120] ASID allocator initialised with 32768 entries
[ 0.001160] rcu: Hierarchical SRCU implementation.
[ 0.001477] smp: Bringing up secondary CPUs ...
[ 0.001671] Detected PIPT I-cache on CPU1
[ 0.001700] CPU1: Booted secondary processor 0x0000000001 [0x410fd083]
[ 0.001913] Detected PIPT I-cache on CPU2
[ 0.001927] CPU2: Booted secondary processor 0x0000000002 [0x410fd083]
[ 0.002122] Detected PIPT I-cache on CPU3
[ 0.002135] CPU3: Booted secondary processor 0x0000000003 [0x410fd083]
[ 0.002164] smp: Brought up 1 node, 4 CPUs
[ 0.002188] SMP: Total of 4 processors activated.
[ 0.002193] CPU features: detected: 32-bit EL0 Support
[ 0.002198] CPU features: detected: CRC32 instructions
[ 0.002222] CPU features: emulated: Privileged Access Never (PAN) using TTBR0_EL1 switching
[ 0.002230] CPU: All CPU(s) started at EL2
[ 0.002243] alternatives: patching kernel code
[ 0.005861] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.005884] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.007118] pinctrl core: initialized pinctrl subsystem
[ 0.007608] NET: Registered protocol family 16
[ 0.008290] DMA: preallocated 1024 KiB pool for atomic allocations
[ 0.008574] cpuidle: using governor ladder
[ 0.008588] cpuidle: using governor menu
[ 0.008698] Serial: AMBA PL011 UART driver
[ 0.009431] bcm2835-mbox fe00b880.mailbox: mailbox enabled
[ 0.016008] raspberrypi-firmware soc:firmware: Attached to firmware from 2021-02-16 14:17, variant start
[ 0.020005] raspberrypi-firmware soc:firmware: Firmware hash is d6d82cf99bcb3e9a166a34cfde53130957a36bd3
[ 0.032638] bcm2835-dma fe007000.dma: DMA legacy API manager, dmachans=0x1
[ 0.033450] SCSI subsystem initialized
[ 0.033525] usbcore: registered new interface driver usbfs
[ 0.033546] usbcore: registered new interface driver hub
[ 0.033562] usbcore: registered new device driver usb
[ 0.033615] usb_phy_generic phy: phy supply vcc not found, using dummy regulator
[ 0.033746] workqueue: max_active 576 requested for napi_workq is out of range, clamping between 1 and 512
[ 0.034165] clocksource: Switched to clocksource arch_sys_counter
[ 0.035546] thermal_sys: Registered thermal governor 'step_wise'
[ 0.035656] NET: Registered protocol family 2
[ 0.036069] IP idents hash table entries: 65536 (order: 7, 524288 bytes, linear)
[ 0.037235] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, linear)
[ 0.037261] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 0.037356] TCP bind hash table entries: 32768 (order: 7, 524288 bytes, linear)
[ 0.037861] TCP: Hash tables configured (established 32768 bind 32768)
[ 0.038012] UDP hash table entries: 2048 (order: 4, 65536 bytes, linear)
[ 0.038041] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes, linear)
[ 0.038153] NET: Registered protocol family 1
[ 0.038198] PCI: CLS 0 bytes, default 64
[ 0.038809] workingset: timestamp_bits=46 max_order=20 bucket_order=0
[ 0.040740] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.050489] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 0.051417] brcm-pcie fd500000.pcie: host bridge /scb/pcie@7d500000 ranges:
[ 0.051430] brcm-pcie fd500000.pcie: No bus range found for /scb/pcie@7d500000, using [bus 00-ff]
[ 0.051446] brcm-pcie fd500000.pcie: MEM 0x0600000000..0x0603ffffff -> 0x00f8000000
[ 0.051459] brcm-pcie fd500000.pcie: IB MEM 0x0000000000..0x00bfffffff -> 0x0400000000
[ 0.100216] brcm-pcie fd500000.pcie: link up, 5 GT/s x1 (SSC)
[ 0.100290] brcm-pcie fd500000.pcie: PCI host bridge to bus 0000:00
[ 0.100298] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.100305] pci_bus 0000:00: root bus resource [mem 0x600000000-0x603ffffff] (bus address [0xf8000000-0xfbffffff])
[ 0.100325] pci 0000:00:00.0: [14e4:2711] type 01 class 0x060400
[ 0.100374] pci 0000:00:00.0: PME# supported from D0 D3hot
[ 0.101759] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[ 0.101849] pci 0000:01:00.0: [1106:3483] type 00 class 0x0c0330
[ 0.101878] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x00000fff 64bit]
[ 0.101957] pci 0000:01:00.0: PME# supported from D0 D3cold
[ 0.103277] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[ 0.103295] pci 0000:00:00.0: BAR 8: assigned [mem 0x600000000-0x6000fffff]
[ 0.103304] pci 0000:01:00.0: BAR 0: assigned [mem 0x600000000-0x600000fff 64bit]
[ 0.103346] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.103353] pci 0000:00:00.0: bridge window [mem 0x600000000-0x6000fffff]
[ 0.103429] pcieport 0000:00:00.0: enabling device (0000 -> 0002)
[ 0.103484] pcieport 0000:00:00.0: PME: Signaling with IRQ 38
[ 0.103600] pcieport 0000:00:00.0: AER: enabled with IRQ 38
[ 0.103690] pci 0000:01:00.0: enabling device (0000 -> 0002)
[ 0.103863] bcm2708_fb soc:fb: Unable to determine number of FBs. Disabling driver.
[ 0.103874] bcm2708_fb: probe of soc:fb failed with error -2
[ 0.104619] Serial: 8250/16550 driver, 1 ports, IRQ sharing enabled
[ 0.104962] iproc-rng200 fe104000.rng: hwrng registered
[ 0.105016] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[ 0.105190] gpiomem-bcm2835 fe200000.gpiomem: Initialised: Registers at 0xfe200000
[ 0.105279] cacheinfo: Unable to detect cache hierarchy for CPU 0
[ 0.105837] random: fast init done
[ 0.106215] random: crng init done
[ 0.107940] brd: module loaded
[ 0.109510] loop: module loaded
[ 0.109867] Loading iSCSI transport class v2.0-870.
[ 0.110443] libphy: Fixed MDIO Bus: probed
[ 0.110547] bcmgenet fd580000.ethernet: failed to get enet clock
[ 0.110556] bcmgenet fd580000.ethernet: GENET 5.0 EPHY: 0x0000
[ 0.110563] bcmgenet fd580000.ethernet: failed to get enet-wol clock
[ 0.110569] bcmgenet fd580000.ethernet: failed to get enet-eee clock
[ 0.110585] bcmgenet: Skipping UMAC reset
[ 0.122167] libphy: bcmgenet MII bus: probed
[ 0.170178] unimac-mdio unimac-mdio.-19: Broadcom UniMAC MDIO bus
[ 0.170568] xhci_hcd 0000:01:00.0: xHCI Host Controller
[ 0.170583] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 1
[ 0.171056] xhci_hcd 0000:01:00.0: hcc params 0x002841eb hci version 0x100 quirks 0x0000009000000890
[ 0.171446] xhci_hcd 0000:01:00.0: xHCI Host Controller
[ 0.171455] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 2
[ 0.171466] xhci_hcd 0000:01:00.0: Host supports USB 3.0 SuperSpeed
[ 0.171601] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.04
[ 0.171609] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.171616] usb usb1: Product: xHCI Host Controller
[ 0.171622] usb usb1: Manufacturer: Linux 5.4.154 xhci-hcd
[ 0.171627] usb usb1: SerialNumber: 0000:01:00.0
[ 0.171763] hub 1-0:1.0: USB hub found
[ 0.171808] hub 1-0:1.0: 1 port detected
[ 0.172076] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.04
[ 0.172084] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.172091] usb usb2: Product: xHCI Host Controller
[ 0.172096] usb usb2: Manufacturer: Linux 5.4.154 xhci-hcd
[ 0.172101] usb usb2: SerialNumber: 0000:01:00.0
[ 0.172214] hub 2-0:1.0: USB hub found
[ 0.172260] hub 2-0:1.0: 4 ports detected
[ 0.172610] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 0.172647] dwc_otg: FIQ enabled
[ 0.172648] dwc_otg: NAK holdoff enabled
[ 0.172650] dwc_otg: FIQ split-transaction FSM enabled
[ 0.172652] Module dwc_common_port init
[ 0.172776] usbcore: registered new interface driver uas
[ 0.172807] usbcore: registered new interface driver usb-storage
[ 0.172839] mousedev: PS/2 mouse device common for all mice
[ 0.173028] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
[ 0.173448] sdhci: Secure Digital Host Controller Interface driver
[ 0.173454] sdhci: Copyright(c) Pierre Ossman
[ 0.173583] mmc-bcm2835 fe300000.mmcnr: could not get clk, deferring probe
[ 0.173674] Error: Driver 'sdhost-bcm2835' is already registered, aborting...
[ 0.173679] sdhci-pltfm: SDHCI platform and OF driver helper
[ 0.175838] vchiq: vchiq_init_state: slot_zero = 0000000034bfab1f
[ 0.177370] NET: Registered protocol family 10
[ 0.177784] Segment Routing with IPv6
[ 0.177818] NET: Registered protocol family 17
[ 0.177840] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 0.177848] 8021q: 802.1Q VLAN Support v1.8
[ 0.178013] Key type ._fscrypt registered
[ 0.178018] Key type .fscrypt registered
[ 0.180338] uart-pl011 fe201000.serial: cts_event_workaround enabled
[ 0.180394] fe201000.serial: ttyAMA0 at MMIO 0xfe201000 (irq = 14, base_baud = 0) is a PL011 rev2
[ 0.400040] usb 2-2: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 0.410493] printk: console [ttyAMA0] enabled
[ 0.486704] usb 2-2: New USB device found, idVendor=0b95, idProduct=1790, bcdDevice= 1.00
[ 0.494918] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains driver
[ 0.496528] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 0.501852] mmc-bcm2835 fe300000.mmcnr: mmc_debug:0 mmc_debug2:0
[ 0.509996] usb 2-2: Product: AX88179
[ 0.514081] mmc-bcm2835 fe300000.mmcnr: DMA channel allocated
[ 0.562118] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[ 0.563019] usb 2-2: Manufacturer: ASIX Elec. Corp.
[ 0.569971] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 0.577962] usb 2-2: SerialNumber: 00000000000179
[ 0.646165] usb 1-1: new high-speed USB device number 2 using xhci_hcd
[ 0.647738] mmc0: SDHCI controller on fe340000.emmc2 [fe340000.emmc2] using ADMA
[ 0.870059] usb 1-1: New USB device found, idVendor=2109, idProduct=3431, bcdDevice= 4.21
[ 0.876232] of_cfs_init
[ 0.881271] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 0.881274] usb 1-1: Product: USB2.0 Hub
[ 0.888967] of_cfs_init: OK
[ 0.922050] hub 1-1:1.0: USB hub found
[ 0.929320] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 0.934928] hub 1-1:1.0: 4 ports detected
[ 0.940628] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[ 1.351122] Waiting for root device /dev/mmcblk0p2...
[ 1.357706] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 1.452251] mmc0: new ultra high speed DDR50 SDXC card at address 0001
[ 1.459208] mmcblk0: mmc0:0001 ED4QT 119 GiB
[ 1.464290] mmcblk0: p1 p2
[ 1.468193] mmc1: new high speed SDIO card at address 0001
[ 1.487915] EXT4-fs (mmcblk0p2): mounted filesystem without journal. Opts: (null)
[ 1.495434] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 1.502512] Freeing unused kernel memory: 512K
[ 1.507006] Run /sbin/init as init process
[ 1.550504] init: Console is alive
[ 1.553982] init: - watchdog -
[ 1.745265] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[ 1.758883] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 1.768737] init: - preinit -
[ 1.854672] bcmgenet: Skipping UMAC reset
[ 1.859867] bcmgenet fd580000.ethernet: configuring instance for external RGMII
[ 1.867328] bcmgenet fd580000.ethernet eth0: Link is Down
[ 5.899552] mount_root: mounting /dev/root
[ 5.904007] EXT4-fs (mmcblk0p2): warning: mounting unchecked fs, running e2fsck is recommended
[ 5.913553] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 5.933716] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 5.944217] urandom-seed: Seeding with /etc/urandom.seed
[ 5.954256] bcmgenet fd580000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[ 5.962304] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 5.996212] bcmgenet fd580000.ethernet eth0: Link is Down
[ 6.003742] procd: - early -
[ 6.006669] procd: - watchdog -
[ 6.526927] procd: - watchdog -
[ 6.530746] procd: - ubus -
[ 6.584414] procd: - init -
[ 6.588019] uart-pl011 fe201000.serial: no DMA platform data
[ 6.655101] kmodloader: loading kernel modules from /etc/modules.d/*
[ 6.674487] tun: Universal TUN/TAP device driver, 1.6
[ 6.687187] sctp: Hash tables configured (bind 256/256)
[ 6.710627] hidraw: raw HID events driver (C) Jiri Kosina
[ 6.716869] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[ 6.728022] GACT probability on
[ 6.731621] Mirror/redirect action on
[ 6.737054] u32 classifier
[ 6.739777] input device check on
[ 6.743432] Actions configured
[ 6.763358] Loading modules backported from Linux version v5.10.68-0-g4d8524048a35
[ 6.770948] Backport generated by backports.git v5.10.68-1-0-ga4f9ba32
[ 6.785476] usbcore: registered new interface driver usbhid
[ 6.791066] usbhid: USB HID core driver
[ 6.801431] xt_time: kernel timezone is -0000
[ 7.140111] ax88179_178a 2-2:1.0 eth1: register 'ax88179_178a' at usb-0000:01:00.0-2, ASIX AX88179 USB 3.0 Gigabit Ethernet, 00:0e:c6:48:54:17
[ 7.154304] usbcore: registered new interface driver ax88179_178a
[ 7.160996] usbcore: registered new interface driver cdc_ether
[ 7.182387] PPP generic driver version 2.4.2
[ 7.187436] NET: Registered protocol family 24
[ 7.192388] usbcore: registered new interface driver rndis_host
[ 7.199823] wireguard: WireGuard 1.0.0 loaded. See www.wireguard.com for information.
[ 7.207670] wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
[ 7.229719] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 7.395803] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 7.413693] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Mar 23 2020 02:20:01 version 7.45.206 (r725000 CY) FWID 01-febaba43
[ 7.452266] usbcore: registered new interface driver brcmfmac
[ 7.459456] kmodloader: done loading kernel modules from /etc/modules.d/*
[ 8.326955] bcmgenet: Skipping UMAC reset
[ 8.332126] bcmgenet fd580000.ethernet: configuring instance for external RGMII
[ 8.339615] bcmgenet fd580000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[ 12.653352] ax88179_178a 2-2:1.0 eth1: ax88179 - Link status is: 1