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    pfsense DNS resolver not registering IPv6 addresses

    Scheduled Pinned Locked Moved IPv6
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    • JKnottJ
      JKnott @JKnott
      last edited by

      @JKnott

      Perhaps routing isn't the best term in this instance. Unlike Windows, Linux leaves both interfaces up, when Ethernet is connected. When an arp request comes in on the Ethernet port, for the WiFi address, Linux still responds, not caring which interface the address is assigned to and replies through the Ethernet port, based on it having the lower metric.

      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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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by johnpoz

        @JKnott said in pfsense DNS resolver not registering IPv6 addresses:

        Linux functions as a router, unless you disable it.

        Which linux distros are these, out of the box every single linux I have ever setup - unless its a specific "router" distro.
        user@uc:~$ cat /proc/sys/net/ipv4/ip_forward
        0

        When you have 2 interfaces in the same network, yeah the OS should use the interface with the lowest metric to talk to that network.

        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

        JKnottJ 1 Reply Last reply Reply Quote 0
        • JKnottJ
          JKnott @johnpoz
          last edited by

          @johnpoz

          Sorry, my mistake. I must have been thinking of something else. Regardless, with Linux both interfaces are up and either address can be used as I do frequently.

          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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          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by johnpoz

            This is no different than windows.. I can fire up a wifi interface and use it, on the same network my wire is connected too.

            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

            JKnottJ 1 Reply Last reply Reply Quote 0
            • JKnottJ
              JKnott @johnpoz
              last edited by JKnott

              @johnpoz

              On the same network? When I try that, I can't ping the WiFi interface, if Ethernet is connected. I haven't tried different networks. On my home network, I normally use WiFi for my notebook, but on occasion use Ethernet. Eitherway, I use the WiFi host name to connect to it.

              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...

              PeekP 1 Reply Last reply Reply Quote 0
              • PeekP
                Peek @JKnott
                last edited by

                Allrighty then ...

                It's thus the WiFi address to be registered in DNS for connectivity via WiFi OR ETH.

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  Well depends on your box or driver - some bios can disable wifi on a wired connection.. But you can for sure fire it up and use it if you so desire.. But its almost never a good thing ;)

                  Wireless LAN adapter Wi-Fi:
                  
                     Connection-specific DNS Suffix  . : local.lan
                     Description . . . . . . . . . . . : Broadcom 802.11n Network Adapter
                     Physical Address. . . . . . . . . : 38-59-F9-5F-63-C1
                     DHCP Enabled. . . . . . . . . . . : Yes
                     Autoconfiguration Enabled . . . . : Yes
                     IPv4 Address. . . . . . . . . . . : 192.168.9.212(Preferred)
                     Subnet Mask . . . . . . . . . . . : 255.255.255.0
                     Lease Obtained. . . . . . . . . . : Wednesday, September 18, 2019 10:10:33 PM
                     Lease Expires . . . . . . . . . . : Sunday, September 22, 2019 10:10:32 PM
                     Default Gateway . . . . . . . . . : 192.168.9.253
                     DHCP Server . . . . . . . . . . . : 192.168.9.253
                     DNS Servers . . . . . . . . . . . : 192.168.3.10
                     NetBIOS over Tcpip. . . . . . . . : Enabled
                  

                  Just fired wifi on same 192.168.9 network

                  Here is wire

                  Ethernet adapter Local:
                  
                     Connection-specific DNS Suffix  . :
                     Description . . . . . . . . . . . : Realtek PCIe GbE Family Controller
                     Physical Address. . . . . . . . . : 00-13-3B-2F-67-62
                     DHCP Enabled. . . . . . . . . . . : No
                     Autoconfiguration Enabled . . . . : Yes
                     IPv4 Address. . . . . . . . . . . : 192.168.9.100(Preferred)
                     Subnet Mask . . . . . . . . . . . : 255.255.255.0
                     Default Gateway . . . . . . . . . : 192.168.9.253
                     DNS Servers . . . . . . . . . . . : 192.168.3.10
                     NetBIOS over Tcpip. . . . . . . . : Enabled
                  

                  Here i am pinging the wifi IP from another box

                  user@uc:~$ ping 192.168.9.212
                  PING 192.168.9.212 (192.168.9.212) 56(84) bytes of data.
                  64 bytes from 192.168.9.212: icmp_seq=1 ttl=127 time=1.42 ms
                  64 bytes from 192.168.9.212: icmp_seq=2 ttl=127 time=1.26 ms
                  64 bytes from 192.168.9.212: icmp_seq=3 ttl=127 time=2.40 ms
                  64 bytes from 192.168.9.212: icmp_seq=4 ttl=127 time=4.29 ms
                  64 bytes from 192.168.9.212: icmp_seq=5 ttl=127 time=1.90 ms
                  64 bytes from 192.168.9.212: icmp_seq=6 ttl=127 time=2.94 ms
                  64 bytes from 192.168.9.212: icmp_seq=7 ttl=127 time=1.24 ms
                  64 bytes from 192.168.9.212: icmp_seq=8 ttl=127 time=1.34 ms
                  ^C
                  --- 192.168.9.212 ping statistics ---
                  8 packets transmitted, 8 received, 0% packet loss, time 7010ms
                  rtt min/avg/max/mdev = 1.246/2.102/4.295/1.009 ms
                  user@uc:~$ 
                  

                  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

                  JKnottJ 1 Reply Last reply Reply Quote 0
                  • JKnottJ
                    JKnott @johnpoz
                    last edited by

                    @johnpoz

                    Here's what happens here, with Ethernet connected:

                    Ping WiFi address

                    ping 172.16.0.40
                    PING 172.16.0.40 (172.16.0.40) 56(84) bytes of data.
                    From 172.16.0.10 icmp_seq=1 Destination Host Unreachable
                    From 172.16.0.10 icmp_seq=2 Destination Host Unreachable
                    From 172.16.0.10 icmp_seq=3 Destination Host Unreachable
                    ^C
                    --- 172.16.0.40 ping statistics ---
                    5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4099ms
                    pipe 4

                    Ping Ethernet address

                    ping 172.16.0.40
                    PING 172.16.0.40 (172.16.0.40) 56(84) bytes of data.
                    From 172.16.0.10 icmp_seq=1 Destination Host Unreachable
                    From 172.16.0.10 icmp_seq=2 Destination Host Unreachable
                    From 172.16.0.10 icmp_seq=3 Destination Host Unreachable
                    ^C
                    --- 172.16.0.40 ping statistics ---
                    5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4099ms
                    pipe 4

                    However, one thing I did notice was that the WiFi address is reachable for several seconds after plugging in the cable, then becomes unreachable.

                    If WiFi only is connected, I cannot reach the Ethernet address.

                    So, it appears Windows is shutting down the WiF interface, after Ethernet is connected. Ipconfig shows it as "Media disconnected".

                    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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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by johnpoz

                      Again that could be a setting in the bios or the driver, or the software you put on for the wifi card.. Is this a laptop? Its very common for laptops to do that..

                      Example

                      Here is my wifi card driver settings
                      driversetting.png

                      Notice I have it disabled ;)

                      Again - because its not normally a good thing to be multihomed..

                      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

                      JKnottJ 1 Reply Last reply Reply Quote 0
                      • JKnottJ
                        JKnott @johnpoz
                        last edited by JKnott

                        @johnpoz said in pfsense DNS resolver not registering IPv6 addresses:

                        Notice I have it disabled ;)

                        My Wifi NIC doesn't have that setting. 😦

                        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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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by johnpoz

                          What driver are you using - is it current, is it from the maker of the PC/Laptop or from the maker of the card.

                          What specific card is it, in your PC? What version of windows are you running? Pretty sure that should be available if the driver supports it in anything above windows 7.

                          Was the card part of the PC.. If so look in the bios. Or is it a laptop?

                          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

                          JKnottJ 1 Reply Last reply Reply Quote 0
                          • JKnottJ
                            JKnott @johnpoz
                            last edited by

                            @johnpoz

                            It's a Lenovo E520 ThinkPad. It's whatever driver comes with Windows 10, as I haven't installed any other. It originally came with Windows 7. I just took a quick look and didn't see any I could download.

                            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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