IPv6 Error messages flooding my dmesg log, but no issue

[Member Robin]

I always have hundreds, maybe thousands of these strange entries present in dmesg output, but I didn’t care until now (other tasks were more pressing):

[86937.220868] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[86937.376717] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87091.289762] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87091.493217] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87162.479049] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87162.931605] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87245.022686] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87245.197732] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87247.041506] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87248.365814] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87315.359517] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87315.817009] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87399.333751] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87399.517787] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87553.565195] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87553.731926] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87707.354013] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87707.811039] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[87861.465295] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[87861.655315] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[88015.584769] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[88015.767957] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[88169.805340] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[88170.257176] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[88171.834543] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[88173.533659] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[88323.806854] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[88323.996549] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready

This is not new, it probably has started when I switched the notebook from antiX 17.4.1 to 19.3 last year. Interresting thing is: There is no issue with the network connection, eth1 is WLAN, and it connects fast and fine and the connection is most of the time rock stable. Nevertheless, I believe this unnecessary constant background activity takes some system load, which could be used in a better way…

Anybody around who knows what this is, where originates it, and how to stop it?
Or is this behaviour as designed, intended and needed and correct behaviour?

Didn’t find much useful on it searching the forum and the web.
As said before, there is (and was never) no issue with using the eth1 wlan connection, it works fine always, except for these strange log entries.

Recent System info:

System:    Kernel: 4.19.0-222-antix.1-686-smp-pae i686 bits: 32 compiler: gcc v: 8.3.0 
           parameters: vga=0x0317 gfxsave lang=de_DE tz=Europe/Berlin quiet frugal_static splash=v 
           disable=lxF mount=all 
           Desktop: IceWM 2.9.6 vt: 7 dm: SLiM 1.3.6 
           Distro: antiX-19.3_386-full Manolis Glezos 15 October 2020 
           base: Debian GNU/Linux 10 (buster) 
Machine:   Type: Other-vm? System: Notebook product: RIM2000 v: N/A serial: <filter> 
           Chassis: No Enclosure type: 1 serial: <filter> 
           Mobo: Notebook model: RIM2000 serial: <filter> BIOS: Phoenix v: RIM00F0A 
           date: 05/27/2005 
Battery:   ID-1: BAT0 charge: 57.7 Wh (100.0%) condition: 57.7/65.1 Wh (88.6%) volts: 16.6 
           min: 14.8 model: ARIMA LI4403A type: Unknown serial: <filter> status: Full 
Memory:    RAM: total: 1.96 GiB used: 1.24 GiB (63.2%) 
           RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
PCI Slots: Permissions: Unable to run dmidecode. Root privileges required. 
CPU:       Info: Single Core model: Intel Pentium M bits: 32 type: MCP arch: M Dothan family: 6 
           model-id: D (13) stepping: 8 microcode: 20 cache: L2: 2 MiB bogomips: 1596 
           Speed: 800 MHz min/max: 800/1733 MHz Core speed (MHz): 1: 800 
           Flags: acpi apic bts clflush cmov cpuid cx8 de dts est fpu fxsr mca mce mmx msr mtrr nx 
           pae pbe pge pse pti sep ss sse sse2 tm tm2 tsc vme 
           Vulnerabilities: Type: itlb_multihit status: KVM: Vulnerable 
           Type: l1tf mitigation: PTE Inversion 
           Type: mds status: Vulnerable: Clear CPU buffers attempted, no microcode; SMT disabled 
           Type: meltdown mitigation: PTI 
           Type: spec_store_bypass status: Vulnerable 
           Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization 
           Type: spectre_v2 mitigation: Full generic retpoline, STIBP: disabled, RSB filling 
           Type: srbds status: Not affected 
           Type: tsx_async_abort status: Not affected 
Graphics:  Device-1: NVIDIA NV43M [GeForce Go 6600] vendor: Rioworks driver: nvidia v: 304.137 
           alternate: nvidiafb,nouveau bus-ID: 01:00.0 chip-ID: 10de:0148 class-ID: 0300 
           Display: x11 server: X.Org 1.19.2 driver: loaded: nvidia unloaded: modesetting 
           failed: fbdev,nouveau,vesa alternate: nv display-ID: :0.0 screens: 1 
           Screen-1: 0 s-res: 2464x900 s-dpi: 98 s-size: 639x231mm (25.2x9.1") 
           s-diag: 679mm (26.8") 
           Monitor-1: VGA-1 res: 1024x768 hz: 60 
           Monitor-2: VGA-2 res: 1440x900 hz: 60 dpi: 100 size: 367x230mm (14.4x9.1") 
           diag: 433mm (17.1") 
           OpenGL: renderer: GeForce Go 6600/PCIe/SSE2 v: 2.1.2 NVIDIA 304.137 direct render: Yes 
Audio:     Device-1: Intel 82801FB/FBM/FR/FW/FRW High Definition Audio vendor: Rioworks 
           driver: snd_hda_intel v: kernel bus-ID: 00:1b.0 chip-ID: 8086:2668 class-ID: 0403 
           Device-2: Philips s SAA7131/SAA7133/SAA7135 Video Broadcast Decoder vendor: Animation 
           driver: saa7134 v: 0, 2, 17 bus-ID: 06:03.0 chip-ID: 1131:7133 class-ID: 0480 
           Sound Server-1: ALSA v: k4.19.0-222-antix.1-686-smp-pae running: yes 
Network:   Device-1: Marvell 88E8036 PCI-E Fast Ethernet vendor: Rioworks driver: sky2 v: 1.30 
           port: 2000 bus-ID: 02:00.0 chip-ID: 11ab:4351 class-ID: 0200 
           IF: eth0 state: down mac: <filter> 
           Device-2: Intel PRO/Wireless 2200BG [Calexico2] Network driver: ipw2200 v: 1.2.2kmprq 
           modules: wl port: 2000 bus-ID: 06:08.0 chip-ID: 8086:4220 class-ID: 0280 
           IF: eth1 state: up mac: <filter> 
           IP v4: <filter> scope: global broadcast: <filter> 
           IP v6: <filter> scope: link 
           WAN IP: <filter> 
Bluetooth: Message: No bluetooth data found. 
Logical:   Message: No logical block device data found. 
RAID:      Message: No RAID data found. 
Drives:    Local Storage: total: 151.75 GiB used: 79.8 GiB (52.6%) 
           SMART Message: Unable to run smartctl. Root privileges required. 
           ID-1: /dev/sda maj-min: 8:0 vendor: Seagate model: ST9100823A size: 93.16 GiB 
           block-size: physical: 512 B logical: 512 B speed: <unknown> type: N/A serial: <filter> 
           rev: 3.02 scheme: MBR 
           ID-2: /dev/sdb maj-min: 8:16 type: USB vendor: Generic model: Flash Disk 
           size: 58.59 GiB block-size: physical: 512 B logical: 512 B type: SSD serial: <filter> 
           rev: 8.01 scheme: GPT 
           SMART Message: Unknown USB bridge. Flash drive/Unsupported enclosure? 
           Optical-1: /dev/sr0 vendor: PBDS model: DVD+-RW DS-8W1P rev: BD1B 
           dev-links: cdrom,cdrw,dvd,dvdrw 
           Features: speed: 24 multisession: yes audio: yes dvd: yes rw: cd-r,cd-rw,dvd-r 
           state: running 
Partition: ID-1: /live/boot-dev raw-size: 8 GiB size: 7.81 GiB (97.65%) used: 5.37 GiB (68.8%) 
           fs: ext4 dev: /dev/sda1 maj-min: 8:1 label: antiX-Frugal 
           uuid: 19eaea0e-493b-4007-8eff-f14aca40363f 
           ID-2: /media/_daten3 raw-size: 42.48 GiB size: 41.69 GiB (98.14%) 
           used: 36.16 GiB (86.7%) fs: ext3 dev: /dev/sda7 maj-min: 8:7 label: /daten3 
           uuid: c1bc867a-ec28-436d-831b-e47f334471ce 
           ID-3: /media/_daten4 raw-size: 3 GiB size: 2.89 GiB (96.35%) used: 2.03 GiB (70.2%) 
           fs: ext3 dev: /dev/sda8 maj-min: 8:8 label: /daten4 
           uuid: 556a43c4-118c-4bb5-baa2-7c997faea6da 
           ID-4: /media/_home raw-size: 20 GiB size: 19.56 GiB (97.80%) used: 16.96 GiB (86.7%) 
           fs: ext3 dev: /dev/sda5 maj-min: 8:5 label: /home 
           uuid: 94021be3-c160-4166-a151-92ad72b26f9a 
           ID-5: /media/antiX raw-size: 10 GiB size: 9.78 GiB (97.80%) used: 6.86 GiB (70.1%) 
           fs: ext4 dev: /dev/sda6 maj-min: 8:6 label: antiX 
           uuid: a6852dda-0c34-4c4f-8efc-5d458cbaaeec 
           ID-6: /media/antiX-Live-usb raw-size: 58.54 GiB size: 58.36 GiB (99.68%) 
           used: 6.44 GiB (11.0%) fs: ext4 dev: /dev/sdb1 maj-min: 8:17 label: antiX-Live-usb 
           uuid: 326eac56-4981-40d1-9a28-14376a8aa6a7 
           ID-7: /media/antiX-uefi raw-size: 50 MiB size: 49.9 MiB (99.77%) used: 6 MiB (12.1%) 
           fs: vfat dev: /dev/sdb2 maj-min: 8:18 label: antiX-uefi uuid: 01BA-8055 
           ID-8: /media/sda10 raw-size: 7.51 GiB size: 7.27 GiB (96.77%) used: 5.95 GiB (81.8%) 
           fs: ext4 dev: /dev/sda10 maj-min: 8:10 label: N/A 
           uuid: 0eb91a9b-ea52-4f5b-9140-5a06f6f73d1d 
Swap:      Kernel: swappiness: 10 (default 60) cache-pressure: 50 (default 100) 
           ID-1: swap-1 type: partition size: 2.16 GiB used: 31.5 MiB (1.4%) priority: -2 
           dev: /dev/sda9 maj-min: 8:9 label: N/A uuid: 2d151628-e6f1-4e23-a8a6-7820d17b8a14 
Unmounted: ID-1: /dev/sda2 maj-min: 8:2 size: 1 KiB fs: <superuser required> label: N/A uuid: N/A 
USB:       Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 6 rev: 2.0 speed: 480 Mb/s 
           chip-ID: 1d6b:0002 class-ID: 0900 
           Device-1: 1-3:3 info: Alcor Micro Flash Drive type: Mass Storage driver: usb-storage 
           interfaces: 1 rev: 2.1 speed: 480 Mb/s power: 200mA chip-ID: 058f:6387 class-ID: 0806 
           serial: <filter> 
           Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 speed: 12 Mb/s 
           chip-ID: 1d6b:0001 class-ID: 0900 
           Device-1: 2-1:2 info: Pixart Imaging type: Mouse,Keyboard driver: hid-generic,usbhid 
           interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 093a:2533 class-ID: 0300 
           Hub-3: 3-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 speed: 12 Mb/s 
           chip-ID: 1d6b:0001 class-ID: 0900 
           Hub-4: 4-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 speed: 12 Mb/s 
           chip-ID: 1d6b:0001 class-ID: 0900 
Sensors:   Message: No sensor data found. Is lm-sensors configured? 
Repos:     Packages: apt: 1891 lib: 866 
           Active apt repos in: /etc/apt/sources.list.d/antix.list 
           1: deb https: //mirror.eu.oneandone.net/linux/distributions/mx/packages/antix/buster buster main nonfree nosystemd
           Active apt repos in: /etc/apt/sources.list.d/buster-backports.list 
           1: deb http: //deb.debian.org/debian buster-backports main contrib non-free
           Active apt repos in: /etc/apt/sources.list.d/debian-stable-updates.list 
           1: deb http: //ftp.de.debian.org/debian/ buster-updates main contrib non-free
           Active apt repos in: /etc/apt/sources.list.d/debian.list 
           1: deb http: //ftp.de.debian.org/debian/ buster main contrib non-free
           2: deb http: //security.debian.org/ buster/updates main contrib non-free
           No active apt repos in: /etc/apt/sources.list.d/onion.list 
           No active apt repos in: /etc/apt/sources.list.d/various.list 
Processes: CPU top: 5 of 139 
           1: cpu: 30.0% command: yad pid: 14675 mem: 23.6 MiB (1.1%) 
           2: cpu: 10.8% command: firefox-esr pid: 19435 mem: 462.5 MiB (23.0%) 
           3: cpu: 5.6% command: firefox-esr pid: 19243 mem: 375.8 MiB (18.7%) 
           4: cpu: 3.1% command: gtkdialog pid: 14626 mem: 22.9 MiB (1.1%) 
           5: cpu: 2.3% command: xorg pid: 3910 mem: 63.6 MiB (3.1%) 
           Memory top: 5 of 139 
           1: mem: 462.5 MiB (23.0%) command: firefox-esr pid: 19435 cpu: 10.8% 
           2: mem: 375.8 MiB (18.7%) command: firefox-esr pid: 19243 cpu: 5.6% 
           3: mem: 91.7 MiB (4.5%) command: firefox-esr pid: 19672 cpu: 0.1% 
           4: mem: 63.6 MiB (3.1%) command: xorg pid: 3910 cpu: 2.3% 
           5: mem: 59.9 MiB (2.9%) command: firefox-esr pid: 32415 cpu: 0.0% 
Info:      Processes: 139 Uptime: 1d 7h 13m wakeups: 3 Init: SysVinit v: 2.93 runlevel: 5 
           default: 5 tool: service Compilers: gcc: 8.3.0 alt: 8 Client: shell wrapper 
           v: 5.0.3-release inxi: 3.3.06

Windows is like a submarine. Open a window and serious problems will start.

[Member wildstar84]

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You may want to try adding “ipv6.disable=1” to your boot parameters. I also added “blacklist ipv6” in /etc/modprobe.d/

Hope that helps!

Jim

[Author]

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