Hello,
Yesterday i upgraded to 25.7.5.
In the evening, i was looking at a film from my plex server and experienced connections issues.
The plex server in the vlan 30. The plex player (apple tv) is in lan (igc1 interface).
I never had this before.
I found nothing in the logs that could explain that.
The link on igc1 (lan) goes down.
Could you give me a hint where to look ?
here i the log from system/general
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dns (execute task : unbound_configure_do())
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dns (execute task : dnsmasq_configure_do())
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dns ()
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dhcp (execute task : radvd_configure_dhcp())
2025-10-15T23:45:35Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt3(vlan0.20)
2025-10-15T23:45:35Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on lan(igc1)
2025-10-15T23:45:35Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt2(vlan0.10)
2025-10-15T23:45:35Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt1(vlan0.9)
2025-10-15T23:45:35Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt5(vlan0.40)
2025-10-15T23:45:35Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt4(vlan0.30)
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dhcp (execute task : dhcpd_dhcp_configure())
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dhcp ()
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure ipsec (execute task : ipsec_configure_do(,lan))
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure ipsec (,lan)
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure monitor (execute task : dpinger_configure_do(,[]))
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure monitor (,[])
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: ROUTING: entering configure using lan
2025-10-15T23:45:35Noticekernel<6>[35632] igc1: link state changed to UP
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: DEVD: Ethernet attached event for lan(igc1)
2025-10-15T23:45:31Noticeopnsense/usr/local/etc/rc.linkup: DEVD: Ethernet detached event for lan(igc1)
2025-10-15T23:45:31Noticekernel<6>[35628] igc1: link state changed to DOWN
2025-10-15T23:41:04Noticekernel<6>[35361] arp: 192.168.2.52 moved from 02:6c:29:76:9a:a8 to 24:8a:07:d3:ea:b0 on igc1
2025-10-15T23:40:59Noticekernel<6>[35356] arp: 192.168.2.52 moved from 24:8a:07:d3:ea:b0 to a0:d3:c1:34:03:e6 on igc1
2025-10-15T23:40:50Noticekernel<6>[35348] arp: 192.168.2.50 moved from 02:8d:24:b7:27:0e to 58:47:ca:74:70:2b on igc1
2025-10-15T23:40:48Noticesyslog-ngSyslog connection broken; fd='34', server='AF_INET(192.168.2.50:1514)', time_reopen='60'
2025-10-15T23:40:48Errorsyslog-ngI/O error occurred while writing; fd='34', error='Host is down (64)'
2025-10-15T23:40:48Noticesyslog-ngSyslog connection established; fd='34', server='AF_INET(192.168.2.50:1514)', local='AF_INET(0.0.0.0:0)'
2025-10-15T23:40:13Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure newwanip:rfc2136 (,[lan])
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dns (execute task : unbound_configure_do())
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dns (execute task : dnsmasq_configure_do())
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dns ()
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dhcp (execute task : radvd_configure_dhcp())
2025-10-15T23:40:11Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt3(vlan0.20)
2025-10-15T23:40:11Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on lan(igc1)
2025-10-15T23:40:11Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt2(vlan0.10)
2025-10-15T23:40:11Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt1(vlan0.9)
2025-10-15T23:40:11Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt5(vlan0.40)
2025-10-15T23:40:11Warningopnsense/usr/local/etc/rc.linkup: dhcpd_dhcp6_configure() found no suitable IPv6 address on opt4(vlan0.30)
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dhcp (execute task : dhcpd_dhcp_configure())
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure dhcp ()
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure ipsec (execute task : ipsec_configure_do(,lan))
2025-10-15T23:40:11Noticeopnsense/usr/local/etc/rc.linkup: plugins_configure ipsec (,lan)
My opnsense hardware is a intel N100 box.
igc0 is Wan with (pppoe on vlan)
igc1 is Lan
all the vlans (9, 10, 20, 30, 40) are on a lagg of igc2 and igc3
Well, igc1 physically disconnected for 4 seconds as witnessed by the kernel:
2025-10-15T23:45:35Noticekernel<6>[35632] igc1: link state changed to UP
2025-10-15T23:45:35Noticeopnsense/usr/local/etc/rc.linkup: DEVD: Ethernet attached event for lan(igc1)
2025-10-15T23:45:31Noticeopnsense/usr/local/etc/rc.linkup: DEVD: Ethernet detached event for lan(igc1)
2025-10-15T23:45:31Noticekernel<6>[35628] igc1: link state changed to DOWN
Not sure why. 4 seconds is a bit too short for a switch reboot.
Cheers,
Fraco
Thank for your answer.
Finally seems to be my patch cable.
Yesterday i moved my router to change a defective usb cable (for a kvm hid).
This morning i plug the new usb cable and noticed that led on the switch interface attached to lan (igc1) went off. And when i slightly move the cable it goes off. The interface are sfp+ 2,5G ethernet modules.
These patch cables are way to rigid and i guess not very good quality.
I ordered new cables for all my router interfaces.
igc for SFP?
What hardware is it exactly?
On router interfaces are ethernet 2,5G
SFP+ are on switch.
Many SFP+ will not negotiate at 2.5G. Try locking the interfaces to 1G on the OPNsense side.
What Patrick says is likely the issue, but, two things must be done, 1) disable ASPM on fw device (any way you can, bios, os settings, etc), 2) flash the latest firmware onto your (presumably) i226 nics.
And next is, what sfp modules are they exactly? Are they fully supported by switch firmware? Any updates available for switch?
I think another user had same issue, but sfp was on fw, and noticed switch would say one speed while fw said it was at another.
The i226 is pretty solid running 2.5G. If new cables don't solve the problem then I would be looking at SFP side.