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    randomly lose connection to pfsense router

    Scheduled Pinned Locked Moved General pfSense Questions
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    • S
      ssattannae
      last edited by

      Sorry for the super late update, I was starting to think the problem is fixed since it's been a week but it popped up again this morning. It SEEMS like the dhcp server just decided to stop working. My laptop is sending ARP request who-has 192.168.1.1 but on my pfsense box the lan interface never received the arp request. I'm using tcpdump -i ue0 to check these packets. From what I know since my laptop's arp request is never answered it does not know where 196.168.1.1 is and thus no connection. Is this still related to DHCP or a problem with pfsense ignoring arp for some reason?

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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by johnpoz

        If your not getting back answer to arp, then there is connectivity issue. No that would have nothing to do with dhcp.

        Not going to ignore arp.. Unless it doesn't have that IP anymore.

        When you say laptop - its wireless? If you are sending arp, and the pfsense doesn't see this arp.. Then no it can never answer.

        An intelligent man is sometimes forced to be drunk to spend time with his fools
        If you get confused: Listen to the Music Play
        Please don't Chat/PM me for help, unless mod related
        SG-4860 24.11 | Lab VMs 2.8, 24.11

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        • S
          ssattannae
          last edited by ssattannae

          the laptop is connected to the pfsense box via a usb to ethernet adapter. I've tried different cables but no dice. Though I'm curious as to why restarting pfsense would make it work again.

          Edit: I forgot to mention one detail is that dhcp is on LAN interface.

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          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by

            @ssattannae said in randomly lose connection to pfsense router:

            box via a usb to ethernet adapter.

            Yeah there is your problem, bet you case of beer ;)

            An intelligent man is sometimes forced to be drunk to spend time with his fools
            If you get confused: Listen to the Music Play
            Please don't Chat/PM me for help, unless mod related
            SG-4860 24.11 | Lab VMs 2.8, 24.11

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            • S
              ssattannae
              last edited by

              Yup, I remembered now I was showing a technician how to install a production version of our pfsense onto a generic build. He resetted to factory default first and changed the interfaces so WAN was on a usb port. At the time I didn't think too much about it but it turns out to be a big head for me. @johnpoz I would so buy you a case of beer if I can.

              Thanks everyone for the inputs, I believe this is now solved.

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