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    Strange VLAN icmp thing on hyper-v (only pfsense not replying)

    Scheduled Pinned Locked Moved L2/Switching/VLANs
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    • N
      nblazincic @nblazincic
      last edited by

      @nblazincic First one should do it right ?
      Don't know how dhcp is working but ping not.

      ? 3 Replies Last reply Reply Quote 0
      • kiokomanK
        kiokoman LAYER 8
        last edited by

        maybe there is a solution here ? https://serverfault.com/questions/805167/hyper-v-cannot-ping-vm-from-host

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        we must focus on silencing this @guest character. we must make up lies and alter the copyrights !
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        • ?
          A Former User @nblazincic
          last edited by A Former User

          @nblazincic said in Strange VLAN icmp thing on hyper-v (only pfsense not replying):

          @nblazincic First one should do it right ?
          Don't know how dhcp is working but ping not.

          Is the virtual switch an"external switch"? Is the host OS passing vlan traffic? Is the host OS routing through the (if external) switch as well?

          By host OS I also mean the hypervisor

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          • ?
            A Former User @A Former User
            last edited by

            @sparkyMcpenguin said in Strange VLAN icmp thing on hyper-v (only pfsense not replying):

            @nblazincic said in Strange VLAN icmp thing on hyper-v (only pfsense not replying):

            @nblazincic First one should do it right ?

            By host OS I also mean the hypervisor

            Sorry, referring to your (host2)

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            • ?
              A Former User @nblazincic
              last edited by

              @nblazincic said in Strange VLAN icmp thing on hyper-v (only pfsense not replying):

              @nblazincic First one should do it right ?
              Don't know how dhcp is working but ping not.

              Also by default, windows firewall blocks icmp. Check windows firewall settings (hyperv)

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              • ?
                A Former User @nblazincic
                last edited by A Former User

                @nblazincic
                on your host2 if ICMP is blocked by the host firewall (windows firewall hyperv - this specific case i do not experience personally because the windows clients on my network don't use windows firewall, but a third party av solution. with that solution, it completely disables windows firewall, allowing ICMP traffic, but blocking excessive ICMP or other things (bitdefender av with ips enabled)

                from my experience and training with hyperv, more so with server2016, if that's the firewall on the hypervisor, you need to check ICMP settings on its firewall. your pfsense seems fine IMO

                edit additional: hyperv is a type1 hypervisor, so once enabled even the host os is now a vm (just a tid bit probably not exactly helpful)

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                • JKnottJ
                  JKnott @A Former User
                  last edited by

                  @sparkyMcpenguin

                  You only need STP to prevent loops, as you experienced. Otherwise, it has absolutely no effect. It also has nothing to do with VLANs. Does the OP have any loops? Bottom line, it should be enabled, but I doubt it has anything to do with the problem. If loops were the issue, there would be a lot of traffic going around the loop and hogging the bandwidth.

                  PfSense running on Qotom mini PC
                  i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
                  UniFi AC-Lite access point

                  I haven't lost my mind. It's around here...somewhere...

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                  • N
                    nblazincic @A Former User
                    last edited by

                    @sparkyMcpenguin said in Strange VLAN icmp thing on hyper-v (only pfsense not replying):

                    @nblazincic
                    on your host2 if ICMP is blocked by the host firewall (windows firewall hyperv - this specific case i do not experience personally because the windows clients on my network don't use windows firewall, but a third party av solution. with that solution, it completely disables windows firewall, allowing ICMP traffic, but blocking excessive ICMP or other things (bitdefender av with ips enabled)

                    from my experience and training with hyperv, more so with server2016, if that's the firewall on the hypervisor, you need to check ICMP settings on its firewall. your pfsense seems fine IMO

                    edit additional: hyperv is a type1 hypervisor, so once enabled even the host os is now a vm (just a tid bit probably not exactly helpful)

                    Firewall is disabled, but host machine is treated the same way as VM. So no firewall rules on host2 can prevent vm from comunicatting. Host is pluged in VM switch as any other VM (simple setup, one vm-switch, host and vm's are using same switch).

                    Additionally, if I migrate VM from host1 to host2, that same VM also can not ping its gateway. Same thing happens on native VLAN.

                    What is intersting, if do a packet capture on pfsense interface, I dont even get packet to it, but DHCP services functions normally.

                    I already tried to recreate vswitch, remove host from networking. Will try to update host2 to see if that helps.

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                    • ?
                      A Former User @nblazincic
                      last edited by

                      @nblazincic you also said "directly connected", I assume this to mean machine to machine, no switch.

                      You also said static, is it possibly a gateway IP configuration issue in the adapter settings for each machine? (I assume this is set up properly or not needed to be set up as well) just trying to rule out things not mentioned

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                      • ?
                        A Former User
                        last edited by

                        i just saw this, maybe related?:

                        @kiokoman said in Allowing ICMP/Ping From WAN to Machine On LAN for Ptunnel:

                        i tested it and it work for me, what machine is it? windows?
                        if it's windows maybe you need to do this
                        https://forum.netgate.com/post/895254

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