Intermittent Network Drops pfSense
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Hi,
I have a Dual WAN setup with Primary Bell Canada (Fiber) and Secondary Rogers (5G Home Internet).
It has been three days since my primary Bell connection went down, so I’m using Rogers 5G as a backup.
However, I keep encountering a strange issue:
Every hour or so, all networks drop out—LAN, IoT, and Guest. When this happens, devices are unable to obtain IP addresses from pfSense.At first, I suspected the Rogers device might be the cause. But when pfSense stops working, if I connect the Rogers modem directly to my laptop via Ethernet, the internet works fine. So, it’s not an issue with the Rogers device.
From pfSense, I can still ping external sites like google.ca, but I can’t reach any IP address within my subnets.
Rebooting pfSense temporarily resolves the issue, and all networks come back online—but the problem recurs about an hour later.
Looking at the logs (dmesg), I see the following error repeatedly:
arprequest_internal: cannot find matching address -
@manjotsc said in Intermittent Network Drops pfSense:
arprequest_internal: cannot find matching address
That sounds like some device is trying to reach an IP that is no longer available? Could there be some "states" that are lurking or something thinking the main gateway is still up even if it isn't? Only, I guess since you said you did reboot, the state table should be cleared...
Perhaps there there is something in the gateway monitoring that is not set up correctly or there is an IP conflict?
