Gratitious ARP from ISP causes WAN dropouts

[basskitty]

Hello,

I changed my ISP a while ago and now got their modem in bridge mode working, so my OPNsense WAN port is bridged to the ISP.
Up to multiple times a day, my WAN connection just stops working and reloading it fixes it immediately. I've pinned this down to the ISP sending loads of gratitious ARP messages:

Code Select Expand

2026-06-08T12:31:12
Notice
kernel
<6>[1539] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
2026-06-08T12:21:29
Notice
kernel
<6>[957] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
2026-06-08T12:07:16
Notice
kernel
<6>[103] arp: 195.69.173.1 moved from 00:0e:00:00:01:02 to 00:0e:00:00:01:03 on ix1
2026-06-08T12:07:00
Notice
kernel
<6>[87] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:02 on ix1
Every time this happens, the WAN gateway stops responding and I need to reload, 12:25:09 is when I triggered the interface reload:

Code Select Expand

2026-06-08T12:25:11
Notice
opnsense
/usr/local/etc/rc.newwanip: ROUTING: configuring inet default gateway on wan
2026-06-08T12:25:11
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure dns (execute task : unbound_configure_do(1))
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.newwanip: ROUTING: entering configure using wan
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure dns (execute task : dnsmasq_configure_do(1))
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure dns (1)
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure dhcp (execute task : radvd_configure_dhcp(1))
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure dhcp (1)
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure ipsec (execute task : ipsec_configure_do(1,wan))
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure ipsec (1,wan)
2026-06-08T12:25:10
Notice
opnsense
/usr/local/etc/rc.newwanip: IP renewal starting (new: 195.69.173.56, old: 195.69.173.56, interface: wan, device: ix1, force: yes)
2026-06-08T12:25:09
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure monitor (execute task : dpinger_configure_do(1,[WAN_DHCP]))
2026-06-08T12:25:09
Notice
opnsense
/usr/local/etc/rc.configure_interface: plugins_configure monitor (1,[WAN_DHCP])
2026-06-08T12:25:09
Error
opnsense
/usr/local/etc/rc.configure_interface: ROUTING: refusing to set inet gateway on addressless wan(ix1)
2026-06-08T12:25:09
Warning
opnsense
/usr/local/etc/rc.configure_interface: ROUTING: refusing to set interface route on addressless wan(ix1)
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: Creating resolv.conf
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: New Routers (ix1): 195.69.173.1
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: New Broadcast Address (ix1): 195.69.173.255
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: New Subnet Mask (ix1): 255.255.255.0
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: New IP Address (ix1): 195.69.173.56
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: New Hostname (ix1): 7c5a1c846db5
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: Reason REBOOT on ix1 executing
2026-06-08T12:25:09
Notice
opnsense
/usr/local/etc/rc.configure_interface: ROUTING: entering configure using wan
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: Reason PREINIT on ix1 executing
2026-06-08T12:25:09
Critical
dhclient
exiting.
2026-06-08T12:25:09
Error
dhclient
short write: wanted 20 got 0 bytes
2026-06-08T12:25:09
Notice
dhclient
dhclient-script: Reason FAIL on ix1 executing
2026-06-08T12:25:09
Error
dhclient
My address (195.69.173.56) was deleted, dhclient exiting
2026-06-08T12:23:59
Notice
dhclient
dhclient-script: Creating resolv.conf
2026-06-08T12:23:59
Notice
dhclient
dhclient-script: New Hostname (ix1): 7c5a1c846db5
2026-06-08T12:23:59
Notice
dhclient
dhclient-script: Reason RENEW on ix1 executing
2026-06-08T12:21:29
Notice
kernel
<6>[957] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
I've already tried these things:
* Enable "Skip rules when gateway is down"

* Disable reply-to on WAN rules

* Enable "Dynamic gateway policy" on the interface

* Setting a static ARP entry

* Disabling neighbor discovery on WAN

but nothing worked. Other users of the ISP have reported that they solved it by dropping/ignoring GARP announcements, but I cannot find a way to do this with OPNsense? Running version 26.1.9.

[franco]

Code Select Expand

rc.configure_interface is highly suspicious. This isn't a low level operation and it's also not carried out multiple times in the same second by us.

Can you check dmesg?


Cheers,
Franco

[Seimus]

The logs from OP,

This is a symptom of mobility, e.g IP movement. If it happens like (floods) this there are few possibilities:
1. Misconfiguration on the peer side
2. Duplicate IP
3. If they are using a redundancy protocol, VRRP, HSRP etc. the connection between the two ISP routers could flap triggering failovers

Regards,
S.

[basskitty]

Hey guys,

not seeing anything strange in dmesg:

Code Select Expand

---<<BOOT>>---
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FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 14.3-RELEASE-p14 stable/26.1-n272114-8616e879e31a SMP amd64
FreeBSD clang version 19.1.7 (https://github.com/llvm/llvm-project.git llvmorg-19.1.7-0-gcd708029e0b2)
[1] VT(vga): resolution 640x480
[1] CPU: Intel(R) Atom(TM) CPU C3558 @ 2.20GHz (2200.21-MHz K8-class CPU)
[1]   Origin="GenuineIntel"  Id=0x506f1  Family=0x6  Model=0x5f  Stepping=1
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[1]   Features2=0x4ff8ebbf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,RDRAND>
[1]   AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
[1]   AMD Features2=0x101<LAHF,Prefetch>
[1]   Structured Extended Features=0x2294e283<FSGSBASE,TSCADJ,SMEP,ERMS,NFPUSG,MPX,PQE,RDSEED,SMAP,CLFLUSHOPT,PROCTRACE,SHA>
[1]   Structured Extended Features3=0x2c000000<IBPB,STIBP,ARCH_CAP>
[1]   XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
[1]   IA32_ARCH_CAPS=0x1<RDCL_NO>
[1]   VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID,VID,PostIntr
[1]   TSC: P-state invariant, performance statistics
[1] real memory  = 6442450944 (6144 MB)
[1] avail memory = 6121291776 (5837 MB)
[1] Event timer "LAPIC" quality 600
[1] ACPI APIC Table: <INTEL  TIANO   >
[1] WARNING: L1 data cache covers fewer APIC IDs than a core (0 < 1)
[1] FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
[1] FreeBSD/SMP: 1 package(s) x 4 core(s)
[1] random: registering fast source Intel Secure Key RNG
[1] random: fast provider: "Intel Secure Key RNG"
[1] random: unblocking device.
[1] ioapic0 <Version 2.0> irqs 0-23
[1] Launching APs: 3 2 1
[1] random: entropy device external interface
[1] wlan: mac acl policy registered
[1] kbd1 at kbdmux0
[1] WARNING: Device "spkr" is Giant locked and may be deleted before FreeBSD 15.0.
[1] vtvga0: <VT VGA driver>
[1] smbios0: <System Management BIOS> at iomem 0xf0600-0xf0617
[1] smbios0: Entry point: v3 (64-bit), Version: 3.0
[1] aesni0: <AES-CBC,AES-CCM,AES-GCM,AES-ICM,AES-XTS,SHA1,SHA256>
[1] acpi0: <ALASKA A M I >
[1] acpi0: Power Button (fixed)
[1] cpu0: <ACPI CPU> on acpi0
[1] hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
[1] Timecounter "HPET" frequency 24000000 Hz quality 950
[1] Event timer "HPET" frequency 24000000 Hz quality 550
[1] Event timer "HPET1" frequency 24000000 Hz quality 440
[1] Event timer "HPET2" frequency 24000000 Hz quality 440
[1] Event timer "HPET3" frequency 24000000 Hz quality 440
[1] Event timer "HPET4" frequency 24000000 Hz quality 440
[1] atrtc0: <AT realtime clock> port 0x70-0x77 irq 8 on acpi0
[1] atrtc0: Warning: Couldn't map I/O.
[1] atrtc0: registered as a time-of-day clock, resolution 1.000000s
[1] Event timer "RTC" frequency 32768 Hz quality 0
[1] attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
[1] Timecounter "i8254" frequency 1193182 Hz quality 0
[1] Event timer "i8254" frequency 1193182 Hz quality 100
[1] Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
[1] acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0
[1] pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
[1] pci0: <ACPI PCI bus> on pcib0
[1] pcib1: <ACPI PCI-PCI bridge> at device 6.0 on pci0
[1] pci1: <ACPI PCI bus> on pcib1
[1] pci1: <processor> at device 0.0 (no driver attached)
[1] pcib2: <ACPI PCI-PCI bridge> mem 0xdcbe0000-0xdcbfffff irq 16 at device 9.0 on pci0
[1] pci2: <ACPI PCI bus> on pcib2
[1] igb0: <Intel(R) I211 (Copper)> port 0xd000-0xd01f mem 0xdc900000-0xdc91ffff,0xdc920000-0xdc923fff irq 16 at device 0.0 on pci2
[1] igb0: NVM V0.6 imgtype2
[1] igb0: Using 1024 TX descriptors and 1024 RX descriptors
[1] igb0: Using 2 RX queues 2 TX queues
[1] igb0: Using MSI-X interrupts with 3 vectors
[1] igb0: Ethernet address: 7c:5a:1c:84:6d:b8
[1] igb0: netmap queues/slots: TX 2/1024, RX 2/1024
[1] pcib3: <ACPI PCI-PCI bridge> mem 0xdcbc0000-0xdcbdffff irq 17 at device 10.0 on pci0
[1] pci3: <ACPI PCI bus> on pcib3
[1] igb1: <Intel(R) I211 (Copper)> port 0xc000-0xc01f mem 0xdc800000-0xdc81ffff,0xdc820000-0xdc823fff irq 17 at device 0.0 on pci3
[1] igb1: NVM V0.6 imgtype2
[1] igb1: Using 1024 TX descriptors and 1024 RX descriptors
[1] igb1: Using 2 RX queues 2 TX queues
[1] igb1: Using MSI-X interrupts with 3 vectors
[1] igb1: Ethernet address: 7c:5a:1c:84:6d:b9
[1] igb1: netmap queues/slots: TX 2/1024, RX 2/1024
[1] pcib4: <ACPI PCI-PCI bridge> mem 0xdcba0000-0xdcbbffff irq 18 at device 11.0 on pci0
[1] pci4: <ACPI PCI bus> on pcib4
[1] igb2: <Intel(R) I211 (Copper)> port 0xb000-0xb01f mem 0xdc700000-0xdc71ffff,0xdc720000-0xdc723fff irq 18 at device 0.0 on pci4
[1] igb2: NVM V0.6 imgtype2
[1] igb2: Using 1024 TX descriptors and 1024 RX descriptors
[1] igb2: Using 2 RX queues 2 TX queues
[1] igb2: Using MSI-X interrupts with 3 vectors
[1] igb2: Ethernet address: 7c:5a:1c:84:6d:ba
[1] igb2: netmap queues/slots: TX 2/1024, RX 2/1024
[1] pcib5: <ACPI PCI-PCI bridge> mem 0xdcb80000-0xdcb9ffff irq 19 at device 12.0 on pci0
[1] pci5: <ACPI PCI bus> on pcib5
[1] igb3: <Intel(R) I211 (Copper)> port 0xa000-0xa01f mem 0xdc600000-0xdc61ffff,0xdc620000-0xdc623fff irq 19 at device 0.0 on pci5
[1] igb3: NVM V0.6 imgtype2
[1] igb3: Using 1024 TX descriptors and 1024 RX descriptors
[1] igb3: Using 2 RX queues 2 TX queues
[1] igb3: Using MSI-X interrupts with 3 vectors
[1] igb3: Ethernet address: 7c:5a:1c:84:6d:bb
[1] igb3: netmap queues/slots: TX 2/1024, RX 2/1024
[1] pcib6: <ACPI PCI-PCI bridge> mem 0xdcb60000-0xdcb7ffff irq 20 at device 14.0 on pci0
[1] pci6: <ACPI PCI bus> on pcib6
[1] pcib7: <ACPI PCI-PCI bridge> at device 0.0 on pci6
[1] pci7: <ACPI PCI bus> on pcib7
[1] vgapci0: <VGA-compatible display> port 0x9000-0x907f mem 0xd8000000-0xdbffffff,0xdc000000-0xdc01ffff irq 20 at device 0.0 on pci7
[1] vgapci0: Boot video device
[1] pcib8: <ACPI PCI-PCI bridge> mem 0xdcb40000-0xdcb5ffff irq 21 at device 15.0 on pci0
[1] pci8: <ACPI PCI bus> on pcib8
[1] pcib9: <ACPI PCI-PCI bridge> mem 0xdcb20000-0xdcb3ffff irq 22 at device 16.0 on pci0
[1] pci9: <ACPI PCI bus> on pcib9
[1] pcib10: <ACPI PCI-PCI bridge> mem 0xdcb00000-0xdcb1ffff irq 23 at device 17.0 on pci0
[1] pci10: <ACPI PCI bus> on pcib10
[1] igb4: <Intel(R) I210 (Fiber)> port 0x8000-0x801f mem 0xdc200000-0xdc2fffff,0xdc300000-0xdc303fff irq 23 at device 0.0 on pci10
[1] igb4: EEPROM V3.16-0 eTrack 0x800004b4
[1] igb4: Using 1024 TX descriptors and 1024 RX descriptors
[1] igb4: Using 4 RX queues 4 TX queues
[1] igb4: Using MSI-X interrupts with 5 vectors
[1] igb4: Ethernet address: 7c:5a:1c:84:6d:bc
[1] igb4: netmap queues/slots: TX 4/1024, RX 4/1024
[1] ahci0: <Intel Denverton AHCI SATA controller> port 0xe050-0xe057,0xe040-0xe043,0xe020-0xe03f mem 0xdcc14000-0xdcc15fff,0xdcc19000-0xdcc190ff,0xdcc18000-0xdcc187ff irq 20 at device 19.0 on pci0
[1] ahci0: AHCI v1.31 with 1 6Gbps ports, Port Multiplier supported
[1] ahcich3: <AHCI channel> at channel 3 on ahci0
[1] ahciem0: <AHCI enclosure management bridge> on ahci0
[1] xhci0: <Intel Denverton USB 3.0 controller> mem 0xdcc00000-0xdcc0ffff irq 19 at device 21.0 on pci0
[1] xhci0: 32 bytes context size, 64-bit DMA
[1] usbus0 on xhci0
[1] usbus0: 5.0Gbps Super Speed USB v3.0
[1] pcib11: <ACPI PCI-PCI bridge> irq 16 at device 22.0 on pci0
[1] pci11: <ACPI PCI bus> on pcib11
[1] ix0: <Intel(R) X553 (1GbE)> mem 0xdfc00000-0xdfdfffff,0xdfe04000-0xdfe07fff irq 16 at device 0.0 on pci11
[1] ix0: Using 2048 TX descriptors and 2048 RX descriptors
[1] ix0: Using 4 RX queues 4 TX queues
[1] ix0: Using MSI-X interrupts with 5 vectors
[1] ix0: allocated for 4 queues
[1] ix0: allocated for 4 rx queues
[1] ix0: Ethernet address: 7c:5a:1c:84:6d:b4
[1] ix0: nvm 0.58.0 eTrack 0x80000878
[1] ix0: netmap queues/slots: TX 4/2048, RX 4/2048
[1] ix1: <Intel(R) X553 (1GbE)> mem 0xdfa00000-0xdfbfffff,0xdfe00000-0xdfe03fff irq 17 at device 0.1 on pci11
[1] ix1: Using 2048 TX descriptors and 2048 RX descriptors
[1] ix1: Using 4 RX queues 4 TX queues
[1] ix1: Using MSI-X interrupts with 5 vectors
[1] ix1: allocated for 4 queues
[1] ix1: allocated for 4 rx queues
[1] ix1: Ethernet address: 7c:5a:1c:84:6d:b5
[1] ix1: nvm 0.58.0 eTrack 0x80000878
[1] ix1: netmap queues/slots: TX 4/2048, RX 4/2048
[1] pcib12: <ACPI PCI-PCI bridge> at device 23.0 on pci0
[1] pci12: <ACPI PCI bus> on pcib12
[1] ix2: <Intel(R) X553 L (1GbE)> mem 0xdf600000-0xdf7fffff,0xdf804000-0xdf807fff at device 0.0 on pci12
[1] ix2: Using 2048 TX descriptors and 2048 RX descriptors
[1] ix2: Using 4 RX queues 4 TX queues
[1] ix2: Using MSI-X interrupts with 5 vectors
[1] ix2: allocated for 4 queues
[1] ix2: allocated for 4 rx queues
[1] ix2: Ethernet address: 7c:5a:1c:84:6d:b6
[1] ix2: nvm 0.58.0 eTrack 0x8000087c
[1] ix2: netmap queues/slots: TX 4/2048, RX 4/2048
[1] ix3: <Intel(R) X553 L (1GbE)> mem 0xdf400000-0xdf5fffff,0xdf800000-0xdf803fff at device 0.1 on pci12
[1] ix3: Using 2048 TX descriptors and 2048 RX descriptors
[1] ix3: Using 4 RX queues 4 TX queues
[1] ix3: Using MSI-X interrupts with 5 vectors
[1] ix3: allocated for 4 queues
[1] ix3: allocated for 4 rx queues
[1] ix3: Ethernet address: 7c:5a:1c:84:6d:b7
[1] ix3: nvm 0.58.0 eTrack 0x8000087c
[1] ix3: netmap queues/slots: TX 4/2048, RX 4/2048
[1] pci0: <simple comms> at device 24.0 (no driver attached)
[1] isab0: <PCI-ISA bridge> at device 31.0 on pci0
[1] isa0: <ISA bus> on isab0
[1] pci0: <memory> at device 31.2 (no driver attached)
[1] pci0: <serial bus> at device 31.5 (no driver attached)
[1] apei0: <ACPI Platform Error Interface> on acpi0
[1] acpi_tz0: <Thermal Zone> on acpi0
[1] ns8250: UART FCR is broken
[1] ns8250: UART FCR is broken
[1] uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
[1] orm0: <ISA Option ROM> at iomem 0xc0000-0xc7fff pnpid ORM0000 on isa0
[1] est0: <Enhanced SpeedStep Frequency Control> on cpu0
[1] est: CPU supports Enhanced Speedstep, but is not recognized.
[1] est: cpu_vendor GenuineIntel, msr 20a300001600
[1] device_attach: est0 attach returned 6
[1] est: CPU supports Enhanced Speedstep, but is not recognized.
[1] est: cpu_vendor GenuineIntel, msr 20a300001600
[1] device_attach: est1 attach returned 6
[1] est: CPU supports Enhanced Speedstep, but is not recognized.
[1] est: cpu_vendor GenuineIntel, msr 20a300001600
[1] device_attach: est2 attach returned 6
[1] est: CPU supports Enhanced Speedstep, but is not recognized.
[1] est: cpu_vendor GenuineIntel, msr 20a300001600
[1] device_attach: est3 attach returned 6
[1] Timecounter "TSC-low" frequency 1099999984 Hz quality 1000
[1] Timecounters tick every 1.000 msec
[1] ada0 at ahcich3 bus 0 scbus0 target 0 lun 0
ada0: <ADATA IM2S3134N-064GM 6.8E> ACS-2 ATA SATA 3.x device
ada0: Serial Number 2I4020012336
ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 61057MB (125045424 512 byte sectors)
[1] ses0 at ahciem0 bus 0 scbus1 target 0 lun 0
ses0: <AHCI SGPIO Enclosure 2.00 0001> SEMB S-E-S 2.00 device
ses0: SEMB SES Device
[1] ses0: ada0,pass0 in 'Slot 03', SATA Slot: scbus0 target 0
[1] Trying to mount root from ufs:/dev/ada0s1a [rw]...
[1] ugen0.1: <Intel XHCI root HUB> at usbus0
[1] uhub0 on usbus0
[1] uhub0: <Intel XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
[1] uhub0: 8 ports with 8 removable, self powered
[18] ichsmb0: <Intel Denverton SMBus controller> port 0xe000-0xe01f mem 0xdcc16000-0xdcc160ff irq 23 at device 31.4 on pci0
[18] smbus0: <System Management Bus> on ichsmb0
[20] lo0: link state changed to UP
[26] vlan0: changing name to 'vlan0.20'
[27] vlan1: changing name to 'vlan01'
[31] ix2: link state changed to UP
[31] vlan01: link state changed to UP
[32] wg0: link state changed to UP
[33] ix3: link state changed to UP
[33] ix0: link state changed to UP
[35] ix1: link state changed to UP
[57] ix0: promiscuous mode enabled
[58] ix1: promiscuous mode enabled
[58] lo0: promiscuous mode enabled
[58] ix2: promiscuous mode enabled
[58] ix3: promiscuous mode enabled
[58] vlan01: promiscuous mode enabled
[58] igb1: promiscuous mode enabled
[58] wg0: promiscuous mode enabled
[87] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:02 on ix1
[103] arp: 195.69.173.1 moved from 00:0e:00:00:01:02 to 00:0e:00:00:01:03 on ix1
[957] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[1178] pid 33932 (unbound), jid 0, uid 59: exited on signal 11 (no core dump - bad address)
[1539] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[2383] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[3231] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[4364] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[6370] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[6545] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:02 on ix1
[7741] arp: 195.69.173.1 moved from 00:0e:00:00:01:02 to 00:0e:00:00:01:01 on ix1
[8910] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[10326] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[12058] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:02 on ix1
[13254] arp: 195.69.173.1 moved from 00:0e:00:00:01:02 to 00:0e:00:00:01:01 on ix1
[13351] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[13540] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:02 on ix1
[14200] arp: 195.69.173.1 moved from 00:0e:00:00:01:02 to 00:0e:00:00:01:03 on ix1
[15036] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[15920] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[19768] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[20913] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[21127] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:02 on ix1
[22323] arp: 195.69.173.1 moved from 00:0e:00:00:01:02 to 00:0e:00:00:01:01 on ix1
[22878] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[24564] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[24866] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[26306] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[27502] arp: 195.69.173.1 moved from 00:0e:00:00:01:03 to 00:0e:00:00:01:01 on ix1
[29311] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[29566] arp: 195.69.173.1 moved from 00:0e:00:00:01:03 to 00:0e:00:00:01:02 on ix1
[30762] arp: 195.69.173.1 moved from 00:0e:00:00:01:02 to 00:0e:00:00:01:01 on ix1
[32931] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[34701] arp: 195.69.173.1 moved from 00:0e:00:00:01:03 to 00:0e:00:00:01:01 on ix1
[35170] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
[36058] arp: 195.69.173.1 moved from 00:0e:00:00:01:01 to 00:0e:00:00:01:03 on ix1
I wonder if there is something wrong with setting the static ARP entry at Neighbors -> Static Assignments? Because I noticed that the entry in the ARP table is still changing, even after rebooting after setting it (I read this is necessary somewhere).