WAN interface never recovers after link loss and restore



  • I'm seeing a consistent issue after the 2.0.3 to 2.1-RELEASE upgrade where if pfSense loses the Ethernet link on its WAN interface for whatever reason (cable unplugged, etc), it will never recover the connection when the link is restored. I see this on my WAN gateway interface very consistently, and only after the 2.0.3 –> 2.1 upgrade.

    The link lights on the NIC will briefly flash and then go dark in a consistent pattern that repeats indefinitely, and this behavior only goes away if I power-cycle the firewall.

    I've noticed this issue posted elsewhere on the forums, is this a known bug or am I seeing a mostly-isolated issue? Is there any remediation?



  • Looks like driver issue. Could you try with different NIC?



  • I can't test with a different NIC unfortunately; both are Intel NIC's built into the motherboard. But it definitely never happened in 2.0.3, so I'm assuming it's a software/driver issue like you said.


  • Netgate Administrator

    What are you seeing in the logs? What WAN type are you using?

    Steve



  • @stephenw10:

    What are you seeing in the logs? What WAN type are you using?

    Steve

    It's just a standard single-WAN gateway, no groups or anything. I'll have to check the log next time it happens. What should I be looking for, and which log?


  • Netgate Administrator

    Check for anything that appears. The fact that you said the link light comes up breifly suggests it's stuck in a loop. That should generate a repeating log pattern.

    By what WAN type I meant dhcp, static IP, pppoe etc.

    Are your nics using the em driver?

    Steve



  • @stephenw10:

    Check for anything that appears. The fact that you said the link light comes up briefly suggests it's stuck in a loop. That should generate a repeating log pattern.

    By what WAN type I meant dhcp, static IP, pppoe etc.

    Are your nics using the em driver?

    Steve

    Okay, did some poking around:

    WAN type: DHCP on a Cox Cable installation

    NIC drivers: yes, using the em driver

    I cleared the logs after the last link loss, so I don't have anything to go off of right now. I will have to check it next time it goes down.


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