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    PfSense loses connectivity to gateway, ping to other address on WAN subnet works

    Scheduled Pinned Locked Moved General pfSense Questions
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    • B Offline
      bigman095
      last edited by

      I'm experiencing an issue at a remote site that has proven troublesome.  The connection will work extremely well for an unknown period of time and then all communication to the default gateway is lost.  However, pinging a public IP on the WAN subnet works and then allows the connection to the default gateway to resume and all is well for another unknown period of time.  Using the same IP to recover communication will often cause that IP to fail to ping when the gateway communication is lost the following time.  However, another IP address on the WAN subnet can still be pinged and restores access to the others.

      I have no added packages installed.
      The behavior is the same with or without monitoring the gateway.
      The behavior is the same with using a different IP for gateway monitoring.
      The behavior is the same with or without IPSEC and OpenVPN enabled/in use. 
      The behavior is the same regardless of traffic level.

      I've changed numerous settings based on other posts on the forums, and all result in the same behavior.  I can provide whatever logs might be useful as requested.

      Hardware:
      SG-4860 from pfSense running the official 2.2.2 image.

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      • C Offline
        cmb
        last edited by

        Sounds like the symptoms of an IP conflict. In that circumstance you might see "x is using my IP …" in the system log, with the MAC of the offending device. Otherwise you'll probably need to check the ARP cache of your gateway (or have your ISP do so if it's their equipment) to see what MAC it's showing.

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        • B Offline
          bigman095
          last edited by

          Thanks cmb.

          Turns out the ISP had an undocumented radio on the network.  I guess I ended the freebie Internet for someone.

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