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#1 2022-01-19 07:02:01
- tewilove
- Member
- Registered: 2022-01-19
- Posts: 2
WLAN is blocking other devices from obtaining IPv4 address
The iOS devices in my home are experiencing connection problem due to cannot obtain IPv4 address, while IPv6 is OK.
After some wireshark capturing, I've found that Wi-Fi on my PC is answering IP conflict ARP messages to the iOS device every time it connects to LAN, or right after it gets an IPv4 address from the router.
I cannot figure out what's wrong in my system configuration.
lspci:
06:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)systemctl:
UNIT LOAD ACTIVE SUB DESCRIPTION
proc-sys-fs-binfmt_misc.automount loaded active waiting Arbitrary Executable File Formats File System Automount Point
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:01.0-0000:03:00.0-nvme-nvme0-nvme0n1-nvme0n1p1.device loaded active plugged Samsung SSD 980 PRO 2TB EFI\x20system\x20partition
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:01.0-0000:03:00.0-nvme-nvme0-nvme0n1-nvme0n1p2.device loaded active plugged Samsung SSD 980 PRO 2TB Linux\x20filesystem
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:01.0-0000:03:00.0-nvme-nvme0-nvme0n1-nvme0n1p3.device loaded active plugged Samsung SSD 980 PRO 2TB Linux\x20LUKS
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:01.0-0000:03:00.0-nvme-nvme0-nvme0n1.device loaded active plugged Samsung SSD 980 PRO 2TB
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:03.0-0000:04:00.0-net-enp4s0.device loaded active plugged RTL8125 2.5GbE Controller
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:05.0-0000:05:00.0-net-enp5s0.device loaded active plugged I211 Gigabit Network Connection
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:06.0-0000:06:00.0-net-wlp6s0.device loaded active plugged Wi-Fi 6 AX200 (NGW)
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:08.0-0000:07:00.1-usb1-1\x2d6-1\x2d6:1.0-bluetooth-hci0.device loaded active plugged /sys/devices/pci0000:00/0000:00:01.2/0000:01:00.0/0000:02:08.0/0000:07:00.1/usb1/1-6/1-6:1.0/bluetooth/hci0
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:08.0-0000:07:00.1-usb2-2\x2d2-2\x2d2:1.0-host4-target4:0:0-4:0:0:0-block-sdc.device loaded active plugged SD_Card_Reader
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata1-host0-target0:0:0-0:0:0:0-block-sda-sda1.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD EFI\x20system\x20partition
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata1-host0-target0:0:0-0:0:0:0-block-sda-sda2.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD Microsoft\x20reserved\x20partition
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata1-host0-target0:0:0-0:0:0:0-block-sda-sda3.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD Basic\x20data\x20partition
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata1-host0-target0:0:0-0:0:0:0-block-sda-sda4.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD 4
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata1-host0-target0:0:0-0:0:0:0-block-sda-sda5.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD 5
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata1-host0-target0:0:0-0:0:0:0-block-sda.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata3-host2-target2:0:0-2:0:0:0-block-sdb-sdb1.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD Microsoft\x20reserved\x20partition
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata3-host2-target2:0:0-2:0:0:0-block-sdb-sdb2.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD DATA
sys-devices-pci0000:00-0000:00:01.2-0000:01:00.0-0000:02:09.0-0000:08:00.0-ata3-host2-target2:0:0-2:0:0:0-block-sdb.device loaded active plugged ZHITAI_SC001_Active_1TB_SSD
sys-devices-pci0000:00-0000:00:03.1-0000:0a:00.1-sound-card0-controlC0.device loaded active plugged /sys/devices/pci0000:00/0000:00:03.1/0000:0a:00.1/sound/card0/controlC0
sys-devices-pci0000:00-0000:00:08.1-0000:0c:00.4-sound-card1-controlC1.device loaded active plugged /sys/devices/pci0000:00/0000:00:08.1/0000:0c:00.4/sound/card1/controlC1
sys-devices-platform-serial8250-tty-ttyS0.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS0
sys-devices-platform-serial8250-tty-ttyS1.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS1
sys-devices-platform-serial8250-tty-ttyS10.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS10
sys-devices-platform-serial8250-tty-ttyS11.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS11
sys-devices-platform-serial8250-tty-ttyS12.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS12
sys-devices-platform-serial8250-tty-ttyS13.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS13
sys-devices-platform-serial8250-tty-ttyS14.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS14
sys-devices-platform-serial8250-tty-ttyS15.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS15
sys-devices-platform-serial8250-tty-ttyS16.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS16
sys-devices-platform-serial8250-tty-ttyS17.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS17
sys-devices-platform-serial8250-tty-ttyS18.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS18
sys-devices-platform-serial8250-tty-ttyS19.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS19
sys-devices-platform-serial8250-tty-ttyS2.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS2
sys-devices-platform-serial8250-tty-ttyS20.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS20
sys-devices-platform-serial8250-tty-ttyS21.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS21
sys-devices-platform-serial8250-tty-ttyS22.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS22
sys-devices-platform-serial8250-tty-ttyS23.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS23
sys-devices-platform-serial8250-tty-ttyS24.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS24
sys-devices-platform-serial8250-tty-ttyS25.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS25
sys-devices-platform-serial8250-tty-ttyS26.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS26
sys-devices-platform-serial8250-tty-ttyS27.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS27
sys-devices-platform-serial8250-tty-ttyS28.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS28
sys-devices-platform-serial8250-tty-ttyS29.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS29
sys-devices-platform-serial8250-tty-ttyS3.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS3
sys-devices-platform-serial8250-tty-ttyS30.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS30
sys-devices-platform-serial8250-tty-ttyS31.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS31
sys-devices-platform-serial8250-tty-ttyS4.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS4
sys-devices-platform-serial8250-tty-ttyS5.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS5
sys-devices-platform-serial8250-tty-ttyS6.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS6
sys-devices-platform-serial8250-tty-ttyS7.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS7
sys-devices-platform-serial8250-tty-ttyS8.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS8
sys-devices-platform-serial8250-tty-ttyS9.device loaded active plugged /sys/devices/platform/serial8250/tty/ttyS9
sys-devices-virtual-block-dm\x2d0.device loaded active plugged /sys/devices/virtual/block/dm-0
sys-devices-virtual-block-dm\x2d1.device loaded active plugged /sys/devices/virtual/block/dm-1
sys-devices-virtual-block-dm\x2d2.device loaded active plugged /sys/devices/virtual/block/dm-2
sys-devices-virtual-misc-rfkill.device loaded active plugged /sys/devices/virtual/misc/rfkill
sys-devices-virtual-net-cn1.device loaded active plugged /sys/devices/virtual/net/cn1
sys-devices-virtual-net-cn2.device loaded active plugged /sys/devices/virtual/net/cn2
sys-module-configfs.device loaded active plugged /sys/module/configfs
sys-module-fuse.device loaded active plugged /sys/module/fuse
sys-subsystem-bluetooth-devices-hci0.device loaded active plugged /sys/subsystem/bluetooth/devices/hci0
sys-subsystem-net-devices-cn1.device loaded active plugged /sys/subsystem/net/devices/cn1
sys-subsystem-net-devices-cn2.device loaded active plugged /sys/subsystem/net/devices/cn2
sys-subsystem-net-devices-enp4s0.device loaded active plugged RTL8125 2.5GbE Controller
sys-subsystem-net-devices-enp5s0.device loaded active plugged I211 Gigabit Network Connection
sys-subsystem-net-devices-wlp6s0.device loaded active plugged Wi-Fi 6 AX200 (NGW)
-.mount loaded active mounted Root Mount
boot-efi.mount loaded active mounted /boot/efi
boot.mount loaded active mounted /boot
dev-hugepages.mount loaded active mounted Huge Pages File System
dev-mqueue.mount loaded active mounted POSIX Message Queue File System
run-credentials-systemd\x2dsysusers.service.mount loaded active mounted /run/credentials/systemd-sysusers.service
run-user-1000-doc.mount loaded active mounted /run/user/1000/doc
run-user-1000.mount loaded active mounted /run/user/1000
sys-fs-fuse-connections.mount loaded active mounted FUSE Control File System
sys-kernel-config.mount loaded active mounted Kernel Configuration File System
sys-kernel-debug.mount loaded active mounted Kernel Debug File System
sys-kernel-tracing.mount loaded active mounted Kernel Trace File System
tmp.mount loaded active mounted Temporary Directory /tmp
systemd-ask-password-console.path loaded active waiting Dispatch Password Requests to Console Directory Watch
systemd-ask-password-wall.path loaded active waiting Forward Password Requests to Wall Directory Watch
init.scope loaded active running System and Service Manager
session-2.scope loaded active running Session 2 of User ming
cronie.service loaded active running Periodic Command Scheduler
dbus.service loaded active running D-Bus System Message Bus
kmod-static-nodes.service loaded active exited Create List of Static Device Nodes
ldconfig.service loaded active exited Rebuild Dynamic Linker Cache
lvm2-monitor.service loaded active exited Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling
NetworkManager.service loaded active running Network Manager
ntpd.service loaded active running Network Time Service
polkit.service loaded active running Authorization Manager
rtkit-daemon.service loaded active running RealtimeKit Scheduling Policy Service
sddm.service loaded active running Simple Desktop Display Manager
sshd.service loaded active running OpenSSH Daemon
systemd-fsck@dev-disk-by\x2duuid-005B\x2d1F9F.service loaded active exited File System Check on /dev/disk/by-uuid/005B-1F9F
systemd-fsck@dev-disk-by\x2duuid-ddce37f9\x2db949\x2d4a29\x2d86c8\x2d6becc9959f80.service loaded active exited File System Check on /dev/disk/by-uuid/ddce37f9-b949-4a29-86c8-6becc9959f80
systemd-journal-catalog-update.service loaded active exited Rebuild Journal Catalog
systemd-journal-flush.service loaded active exited Flush Journal to Persistent Storage
systemd-journald.service loaded active running Journal Service
systemd-logind.service loaded active running User Login Management
systemd-modules-load.service loaded active exited Load Kernel Modules
systemd-random-seed.service loaded active exited Load/Save Random Seed
systemd-remount-fs.service loaded active exited Remount Root and Kernel File Systems
systemd-sysctl.service loaded active exited Apply Kernel Variables
systemd-sysusers.service loaded active exited Create System Users
systemd-tmpfiles-setup-dev.service loaded active exited Create Static Device Nodes in /dev
systemd-tmpfiles-setup.service loaded active exited Create Volatile Files and Directories
systemd-udev-trigger.service loaded active exited Coldplug All udev Devices
systemd-udevd.service loaded active running Rule-based Manager for Device Events and Files
systemd-update-done.service loaded active exited Update is Completed
systemd-update-utmp.service loaded active exited Record System Boot/Shutdown in UTMP
systemd-user-sessions.service loaded active exited Permit User Sessions
udisks2.service loaded active running Disk Manager
upower.service loaded active running Daemon for power management
user-runtime-dir@1000.service loaded active exited User Runtime Directory /run/user/1000
user@1000.service loaded active running User Manager for UID 1000
wpa_supplicant.service loaded active running WPA supplicant
-.slice loaded active active Root Slice
system-getty.slice loaded active active Slice /system/getty
system-modprobe.slice loaded active active Slice /system/modprobe
system-systemd\x2dfsck.slice loaded active active Slice /system/systemd-fsck
system.slice loaded active active System Slice
user-1000.slice loaded active active User Slice of UID 1000
user.slice loaded active active User and Session Slice
dbus.socket loaded active running D-Bus System Message Bus Socket
dm-event.socket loaded active listening Device-mapper event daemon FIFOs
lvm2-lvmpolld.socket loaded active listening LVM2 poll daemon socket
systemd-coredump.socket loaded active listening Process Core Dump Socket
systemd-journald-audit.socket loaded active running Journal Audit Socket
systemd-journald-dev-log.socket loaded active running Journal Socket (/dev/log)
systemd-journald.socket loaded active running Journal Socket
systemd-rfkill.socket loaded active listening Load/Save RF Kill Switch Status /dev/rfkill Watch
systemd-udevd-control.socket loaded active running udev Control Socket
systemd-udevd-kernel.socket loaded active running udev Kernel Socket
dev-disk-by\x2duuid-903c448c\x2d7b0d\x2d4734\x2da165\x2d5f57c90418b1.swap loaded active active /dev/disk/by-uuid/903c448c-7b0d-4734-a165-5f57c90418b1
basic.target loaded active active Basic System
bluetooth.target loaded active active Bluetooth Support
cryptsetup.target loaded active active Local Encrypted Volumes
getty.target loaded active active Login Prompts
graphical.target loaded active active Graphical Interface
integritysetup.target loaded active active Local Integrity Protected Volumes
local-fs-pre.target loaded active active Preparation for Local File Systems
local-fs.target loaded active active Local File Systems
multi-user.target loaded active active Multi-User System
network.target loaded active active Network
paths.target loaded active active Path Units
remote-fs.target loaded active active Remote File Systems
slices.target loaded active active Slice Units
sockets.target loaded active active Socket Units
sound.target loaded active active Sound Card
swap.target loaded active active Swaps
sysinit.target loaded active active System Initialization
timers.target loaded active active Timer Units
veritysetup.target loaded active active Local Verity Protected Volumes
man-db.timer loaded active waiting Daily man-db regeneration
shadow.timer loaded active waiting Daily verification of password and group files
systemd-tmpfiles-clean.timer loaded active waiting Daily Cleanup of Temporary Directorieswireshark captures:
NetworkManager using dhclient.
NetworkManager with internal DHCP client.
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#2 2022-01-19 22:29:24
- fukawi2
- Ex-Administratorino
- From: .vic.au
- Registered: 2007-09-28
- Posts: 6,223
- Website
Re: WLAN is blocking other devices from obtaining IPv4 address
Mod: Not System Admin. Moving to Networking.
Are you familiar with our Forum Rules, and How To Ask Questions The Smart Way?
BlueHackers // fscanary // resticctl
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#3 2022-01-20 09:46:29
- seth
- Member
- Registered: 2012-09-03
- Posts: 51,046
Re: WLAN is blocking other devices from obtaining IPv4 address
Check "ip neigh" on the ARP cache - the conflict means the system thinks that there're two MACs w/ the same IP around.
Compare the entries in the cache to the actual MACs and (received) IPs.
There's also a chance that you've configured conflicting static IPs.
If there's really just rubbish in the arp table, try "ip neigh flush all"
Edit: not sure how this could cause those symptoms, but because of the context, you could try to disable https://wiki.archlinux.org/title/Networ … domization
Last edited by seth (2022-01-20 09:48:57)
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