WAN losing IP randomly



  • Hey guys I am a pfsense semi-novice looking for some help here. Periodically it seems every few days or so my WAN interface loses its IP address. I do not know what to do anymore. I have a traditional cable modem which I have verified with my ISP is not going down. What happens when my internet goes down I login to pfsense gui and when I look at the WAN interface it either shows an ip of 0.0.0.0 or it will show N/A. The only thing which brings it back is a reboot of pfsense. It just happened again to me today but I actually had to reboot twice. Today when I saw I was down it showed the ip of 0.0.0.0 When I rebooted it went to NA. I rebooted again and had my proper ISP IP. Previously when this occured I would go into logs and gateways and I would see Error no route to host. Today when looking under gateway logs I see nothing oddly enough. When googling this issue or issues similar to mine. The suggestion was made to disable gateway monitoring. I did this and have seen 0 difference. I am at a loss for what to do or what is causing this please assist.


  • LAYER 8 Netgate

    Cable modems…

    Rebooting the modem only doesn't help?

    Is your WAN interface configured for DHCP?

    Having it get 0.0.0.0 is different. It's usually something like 192.168.1.100.

    What does Status > Interfaces look like for WAN when it is failed? When it is working?

    The System and Gateways logs are other places I would start.


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