Connection Issues (FO - KPN (NL))

[zer02pi]

 I am using my setup nearly for 1 year or so and up until now I was not having this issue (or I did not realize).

My setup: OPNsense running inside of a VM which hosted by proxmox. I have ethernet card passed thorugh that VM. Cable from ONT directly connected to that ethernet card.

Issue: My connection is dropping and it seems I can not get IP address from KPN. If I restart VM issues resolves but it going down again sometimes 5 mins later sometimes 30 mins later. It is same if I unplug and plug ONT. I checked with AI, it was saying cable might be broken however during these I have never touched cable.

logs:
https://pastebin.com/MiXJrpk5

Version:

OPNsense 25.1-amd64

FreeBSD 14.2-RELEASE

OpenSSL 3.0.15

[viragomann]

I checked with AI, it was saying cable might be broken however during these I have never touched cable.

And why don't you just try to replace it?

Your log show series of interface downs and ups again:

2026-07-19T13:01:33    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:01:33    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:01:26    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:01:26    Notice    kernel    <6>igb1: link state changed to DOWN
2026-07-19T13:01:25    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:01:25    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:01:22    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:01:22    Notice    kernel    <6>igb1: link state changed to DOWN
2026-07-19T13:01:01    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:01:01    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:00:58    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:00:58    Notice    kernel    <6>igb1: link state changed to DOWN
2026-07-19T13:00:57    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:00:57    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:00:54    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:00:54    Notice    kernel    <6>igb1: link state changed to DOWN

So yes, this might indicates a broken cable connected to igb1 or any other hardware defect on this interface.

[nero355]

Cable from ONT directly connected to that ethernet card.

Which ONT exactly ?

There were some issues with certain ONT models used by KPN in the past so maybe it's time to replace yours too :)

[zer02pi]

I checked with AI, it was saying cable might be broken however during these I have never touched cable.

And why don't you just try to replace it?

Your log show series of interface downs and ups again:

2026-07-19T13:01:33    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:01:33    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:01:26    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:01:26    Notice    kernel    <6>igb1: link state changed to DOWN
2026-07-19T13:01:25    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:01:25    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:01:22    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:01:22    Notice    kernel    <6>igb1: link state changed to DOWN
2026-07-19T13:01:01    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:01:01    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:00:58    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:00:58    Notice    kernel    <6>igb1: link state changed to DOWN
2026-07-19T13:00:57    Notice    kernel    <6>vlan06: link state changed to UP
2026-07-19T13:00:57    Notice    kernel    <6>igb1: link state changed to UP
2026-07-19T13:00:54    Notice    kernel    <6>vlan06: link state changed to DOWN
2026-07-19T13:00:54    Notice    kernel    <6>igb1: link state changed to DOWN

So yes, this might indicates a broken cable connected to igb1 or any other hardware defect on this interface.

Because it is hard to replace and just rebooting VM fixes the issue. I hardly believe that the cable is the issue.

[zer02pi]

Cable from ONT directly connected to that ethernet card.

Which ONT exactly ?

There were some issues with certain ONT models used by KPN in the past so maybe it's time to replace yours too :)

I could not find any model number but this: https://ibb.co/9HfLFShq

Like I said, it was working until today.

[nero355]

I could not find any model number but this: https://ibb.co/9HfLFShq

Like I said, it was working until today.

IIRC that's one of the older models, but you can double check this @ https://gathering.tweakers.net/ in a topic called something like "Het Grote KPN Glasvezel Topic" or whatever it is these days :)