avahi filling my system log with errors [Solved]

[MikeComm]

System info:

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System:    Kernel: 5.15.0-3.1-liquorix-amd64 x86_64 bits: 64 compiler: gcc v: 10.2.1 
           parameters: audit=0 intel_pstate=disable acpi_enforce_resources=lax 
           BOOT_IMAGE=/boot/vmlinuz-5.15.0-3.1-liquorix-amd64 root=UUID=<filter> ro splash quiet 
           Desktop: Xfce 4.18.1 tk: Gtk 3.24.24 info: xfce4-panel wm: xfwm 4.18.0 vt: 7 
           dm: LightDM 1.26.0 Distro: MX-21.3_ahs_x64 Wildflower October 10  2021 
           base: Debian GNU/Linux 11 (bullseye) 
Machine:   Type: Laptop System: ASUSTeK product: VivoBook_ASUSLaptop X712UA_M712UA v: 1.0 
           serial: <filter> 
           Mobo: ASUSTeK model: X712UA v: 1.0 serial: <filter> UEFI: American Megatrends LLC. 
           v: X712UA.307 date: 10/26/2021 
Battery:   ID-1: BAT0 charge: 34.4 Wh (80.6%) condition: 42.7/47.0 Wh (90.8%) volts: 11.8 
           min: 11.8 model: ASUSTeK ASUS Battery type: Li-ion serial: N/A status: Discharging 
           cycles: 23 
           Device-1: hidpp_battery_0 model: Logitech Marathon Mouse/Performance Plus M705 
           serial: <filter> charge: 55% (should be ignored) rechargeable: yes status: Discharging 
CPU:       Info: 8-Core model: AMD Ryzen 7 5700U with Radeon Graphics bits: 64 type: MT MCP 
           arch: Zen 2 family: 17 (23) model-id: 68 (104) stepping: 1 microcode: 8608103 cache: 
           L2: 4 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 57487 
           Speed: 2097 MHz min/max: 1400/1800 MHz boost: enabled Core speeds (MHz): 1: 2097 
           2: 2721 3: 2441 4: 2431 5: 1637 6: 1635 7: 2296 8: 1538 9: 1397 10: 1621 11: 1632 
           12: 1213 13: 1898 14: 2262 15: 1984 16: 2492 
           Vulnerabilities: Type: itlb_multihit status: Not affected 
           Type: l1tf status: Not affected 
           Type: mds status: Not affected 
           Type: meltdown status: Not affected 
           Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl 
           Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization 
           Type: spectre_v2 mitigation: Full AMD retpoline, IBPB: conditional, IBRS_FW, STIBP: 
           conditional, RSB filling 
           Type: srbds status: Not affected 
           Type: tsx_async_abort status: Not affected 
Graphics:  Device-1: AMD Lucienne vendor: ASUSTeK driver: amdgpu v: kernel bus-ID: 03:00.0 
           chip-ID: 1002:164c class-ID: 0300 
           Device-2: IMC Networks USB2.0 HD UVC WebCam type: USB driver: uvcvideo bus-ID: 3-3:3 
           chip-ID: 13d3:56ea class-ID: fe01 serial: <filter> 
           Display: x11 server: X.Org 1.20.14 compositor: xfwm4 v: 4.18.0 driver: 
           loaded: amdgpu,ati unloaded: fbdev,modesetting,vesa display-ID: :0.0 screens: 1 
           Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") 
           s-diag: 582mm (22.9") 
           Monitor-1: eDP res: 1920x1080 hz: 60 dpi: 128 size: 382x215mm (15.0x8.5") 
           diag: 438mm (17.3") 
           OpenGL: renderer: AMD RENOIR (LLVM 14.0.5 DRM 3.42 5.15.0-3.1-liquorix-amd64) 
           v: 4.6 Mesa 22.0.5 direct render: Yes 
Audio:     Device-1: AMD Renoir Radeon High Definition Audio driver: snd_hda_intel v: kernel 
           bus-ID: 03:00.1 chip-ID: 1002:1637 class-ID: 0403 
           Device-2: AMD ACP/ACP3X/ACP6x Audio Coprocessor 
           vendor: ASUSTeK Raven/Raven2/FireFlight/Renoir Processor driver: N/A 
           alternate: snd_pci_acp3x, snd_rn_pci_acp3x, snd_pci_acp5x bus-ID: 03:00.5 
           chip-ID: 1022:15e2 class-ID: 0480 
           Device-3: AMD Family 17h/19h HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel 
           bus-ID: 03:00.6 chip-ID: 1022:15e3 class-ID: 0403 
           Sound Server-1: ALSA v: k5.15.0-3.1-liquorix-amd64 running: yes 
           Sound Server-2: PulseAudio v: 14.2 running: yes 
           Sound Server-3: PipeWire v: 0.3.19 running: no 
Network:   Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel modules: wl bus-ID: 01:00.0 
           chip-ID: 8086:2723 class-ID: 0280 
           IF: wlan0 state: up mac: <filter> 
Bluetooth: Device-1: Intel AX200 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 3-2:4 
           chip-ID: 8087:0029 class-ID: e001 
           Report: hciconfig ID: hci0 rfk-id: 4 state: up address: <filter> bt-v: 3.0 lmp-v: 5.2 
           sub-v: 2090 hci-v: 5.2 rev: 2090 
           Info: acl-mtu: 1021:4 sco-mtu: 96:6 link-policy: rswitch sniff link-mode: slave accept 
           service-classes: rendering, capturing, audio 
Drives:    Local Storage: total: 953.87 GiB used: 227.65 GiB (23.9%) 
           SMART Message: Unable to run smartctl. Root privileges required. 
           ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Western Digital 
           model: PC SN530 SDBPNPZ-1T00-1002 size: 953.87 GiB block-size: physical: 512 B 
           logical: 512 B speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter> rev: 21106000 
           temp: 39.9 C scheme: GPT 
Partition: ID-1: / raw-size: 48.83 GiB size: 47.76 GiB (97.81%) used: 17.75 GiB (37.2%) fs: ext4 
           dev: /dev/nvme0n1p9 maj-min: 259:9 
           ID-2: /boot/efi raw-size: 260 MiB size: 256 MiB (98.46%) used: 41.8 MiB (16.3%) 
           fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 
           ID-3: /home raw-size: 345.95 GiB size: 339.46 GiB (98.12%) used: 207.37 GiB (61.1%) 
           fs: ext4 dev: /dev/nvme0n1p10 maj-min: 259:10 
Swap:      Kernel: swappiness: 15 (default 60) cache-pressure: 100 (default) 
           ID-1: swap-1 type: partition size: 18.17 GiB used: 0 KiB (0.0%) priority: -2 
           dev: /dev/nvme0n1p8 maj-min: 259:8 
Sensors:   System Temperatures: cpu: 54.0 C mobo: N/A gpu: amdgpu temp: 46.0 C 
           Fan Speeds (RPM): cpu: 0 
Repos:     Packages: 3097 note: see --pkg apt: 3092 lib: 1760 flatpak: 5 
           No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/atom.list 
           1: deb [arch=amd64] https://packagecloud.io/AtomEditor/atom/any/ any main
           Active apt repos in: /etc/apt/sources.list.d/brave-browser-release.list 
           1: deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main
           Active apt repos in: /etc/apt/sources.list.d/debian-stable-updates.list 
           1: deb http://deb.debian.org/debian/ bullseye-updates main contrib non-free
           Active apt repos in: /etc/apt/sources.list.d/debian.list 
           1: deb http://deb.debian.org/debian/ bullseye main contrib non-free
           2: deb http://security.debian.org/debian-security/ bullseye-security main contrib non-free
           3: deb-src http://deb.debian.org/debian/ bullseye main contrib non-free
           4: deb http://deb.debian.org/debian/ bullseye-backports main contrib non-free
           Active apt repos in: /etc/apt/sources.list.d/mx.list 
           1: deb http://ftp.osuosl.org/pub/mxlinux/mx/repo/ bullseye main non-free
           2: deb http://ftp.osuosl.org/pub/mxlinux/mx/testrepo/ bullseye test
           3: deb http://ftp.osuosl.org/pub/mxlinux/mx/repo/ bullseye ahs
           Active apt repos in: /etc/apt/sources.list.d/opera-stable.list 
           1: deb https://deb.opera.com/opera-stable/ stable non-free
           Active apt repos in: /etc/apt/sources.list.d/skype-stable.list 
           1: deb [arch=amd64] https://repo.skype.com/deb stable main
           Active apt repos in: /etc/apt/sources.list.d/teams.list 
           1: deb [arch=amd64] https://packages.microsoft.com/repos/ms-teams/ stable main
           Active apt repos in: /etc/apt/sources.list.d/vivaldi.list 
           1: deb [arch=amd64] http://repo.vivaldi.com/stable/deb/ stable main
           Active apt repos in: /etc/apt/sources.list.d/vscode.list 
           1: deb [arch=amd64,arm64,armhf] http://packages.microsoft.com/repos/code stable main
Info:      Processes: 379 Uptime: 28m wakeups: 4 Memory: 15.09 GiB used: 2.9 GiB (19.2%) 
           Init: SysVinit v: 2.96 runlevel: 5 default: 5 tool: systemctl Compilers: gcc: 10.2.1 
           alt: 10 Client: shell wrapper v: 5.1.4-release inxi: 3.3.06 
Boot Mode: UEFI

I noticed a degradation in performance and looked at my logs.
This is a shot of the log that repeats every minute:

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7/7/23 4:01 PM	mx-asus-lap	kernel	[UFW BLOCK] IN=wlan0 OUT= MAC=ac:74:b1:38:46:45:c8:9e:43:dd:ef:77:08:00 SRC=192.168.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=34792 DF PROTO=2 
7/7/23 4:01 PM	mx-asus-lap	avahi-daemon[2455]	Record [[b]MFCJ5520DW\032-\032OFFICE\032\064\032mx-asus-lap[/b]._ipp._tcp.local#011IN#011SRV 0 0 631 mx-asus-lap.local ; ttl=120] not fitting in legacy unicast packet, dropping.
7/7/23 4:01 PM	mx-asus-lap	avahi-daemon[2455]	Record [mx-asus-lap.local#011IN#011AAAA fe80::e613:678b:8d56:80a9 ; ttl=120] not fitting in legacy unicast packet, dropping.
7/7/23 4:01 PM	mx-asus-lap	avahi-daemon[2455]	Record [mx-asus-lap.local#011IN#011A 192.168.1.11 ; ttl=120] not fitting in legacy unicast packet, dropping.
7/7/23 4:01 PM	mx-asus-lap	avahi-daemon[2455]	Record [MFCJ5520DW\032-\032OFFICE\032\064\032mx-asus-lap._ipps._tcp.local#011IN#011SRV 0 0 631 mx-asus-lap.local ; ttl=120] not fitting in legacy unicast packet, dropping.
7/7/23 4:01 PM	mx-asus-lap	avahi-daemon[2455]	Record [mx-asus-lap.local#011IN#011AAAA fe80::e613:678b:8d56:80a9 ; ttl=120] not fitting in legacy unicast packet, dropping.
7/7/23 4:01 PM	mx-asus-lap	avahi-daemon[2455]	Record [mx-asus-lap.local#011IN#011A 192.168.1.11 ; ttl=120] not fitting in legacy unicast packet, dropping.

I believe the MFCJ5520DW\032-\032OFFICE\032\064\032mx-asus-lap is a ghost network printer. i deleted it way back when I was getting MX21 installed.
This printer appears in any application print dialogs but not in http://localhost:631/printers/.
Cannot find it in any CUPS config files.
Cannot find any way to delete it - or even find it using any application. Does not show in "Printers".
My linux knowledge level is probably advanced user, if that is a level.

Any help will be greatly appreciated.

[CharlesV]

By any chance are you running a Ubiquiti edge router?
I have seen this when the DNSReflector service is on. The fix was to switch to the DNSRepeater service.
(I think Avahi may also have that same service as I recall.)

The only other time I have seen this error was when ipv6 was enabled, but the connected router had no ipv6 service.
In this case, turning off ipv6 resolved it.

Otherwise, your log shows that you have that MFC printer as an ipps printer currently engaged - if I am reading that right.

[MikeComm]

Router is Netgear RAX54 operating in router mode, ipv6 disabled. Not operating as a reflector.
Wifi printer is installed in ipps.
I disabled ipv6 on the laptop through advanced network setup but problem is still present.

Thanks for the insight.

[CharlesV]

Might be time to hunt down that ghost printer ;-/

This article has two solutions that seem to work for a few people.
https://askubuntu.com/questions/676863/ ... r-in-gnome

[MikeComm]

I had already searched all the "conf" files to no avail. I did find the following that took care of the issue:

sudo nano /etc/avahi/avahi-daemon.conf
In that file:

change “use-ip4=yes” to “use-ip4=no”

change “use-ip6=yes” to “use-ip6=no”

I had to change both to no - just changing ipv4 only was no help.
From my reading about avahi, changing is not a security risk since this my home network.

Now I need to address the [UFW BLOCK] issue

Thanks again for the help.

[CharlesV]

Excellent! Thank you for posting your resolution on this.

Please mark as solved using the check mark on the post that resolved it.