Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    IPv6 cannot connect to Internet

    Scheduled Pinned Locked Moved IPv6
    28 Posts 6 Posters 1.1k Views 4 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • JKnottJ Offline
      JKnott @crazypotato142
      last edited by

      @crazypotato142 said in All IPv6 traffic is being blocked:

      I'm just asking to understand the process: Shouldn't it work this way if it's the thing you guys told about?

      My prefix hasn't changed in almost 7 years, so I don't have much experience to work from. However, I would expect the pfSense LAN interface to show the new prefix and the router advertisements should tell other devices on the LAN what the new prefix is.

      PfSense running on Qotom mini PC
      i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel 1 Gb Ethernet ports.
      UniFi AC-Lite access point

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

      crazypotato142C 1 Reply Last reply Reply Quote 0
      • crazypotato142C Offline
        crazypotato142 @JKnott
        last edited by

        I don't know, I still don't think it's a prefix problem because I used it as it is for a long time without a single problem and now I simply can't connect to the internet with it.

        But I can't see any problem on my settings and my ISP says there's nothing wrong on their side either. I'll just turn my IPv6 network completely off until I figured it out because it really causes my network go crazy.

        Do you have any recommendations to check or solve?

        Bob.DigB JKnottJ 2 Replies Last reply Reply Quote 0
        • Bob.DigB Offline
          Bob.Dig LAYER 8 @crazypotato142
          last edited by

          @crazypotato142 Check the IPv6-addresses closely, are they really using the same prefix or do they differ. It must be the same prefix as pfSense LAN has.

          In Windows use ipconfig /release6 and then ipconfig /renew6 and watch out for problems.

          crazypotato142C 1 Reply Last reply Reply Quote 0
          • crazypotato142C Offline
            crazypotato142 @Bob.Dig
            last edited by crazypotato142

            @Bob.Dig They are like this right now:

            Photos deleted for privacy

            Note: I can't ping an IPv6 address over pFsense interface either.

            Bob.DigB 1 Reply Last reply Reply Quote 0
            • Bob.DigB Offline
              Bob.Dig LAYER 8 @crazypotato142
              last edited by

              @crazypotato142 The first address already looks wrong. At least the prefix is the same.

              crazypotato142C 1 Reply Last reply Reply Quote 0
              • crazypotato142C Offline
                crazypotato142 @Bob.Dig
                last edited by

                @Bob.Dig
                pFsense itself can't connect to anything over IPv6 either. I can't use IPv6 ping, not even get into the Update page cuz Netgate has IPv6 addresses for their website.

                Bob.DigB JKnottJ 2 Replies Last reply Reply Quote 0
                • Bob.DigB Offline
                  Bob.Dig LAYER 8 @crazypotato142
                  last edited by

                  @crazypotato142 said in IPv6 cannot connect to Internet:

                  pFsense itself can't connect to anything over IPv6 either.

                  That screams for a big problem, might be your ISP at this point.

                  crazypotato142C 1 Reply Last reply Reply Quote 0
                  • crazypotato142C Offline
                    crazypotato142 @Bob.Dig
                    last edited by

                    I'll test it with their default router and keep here updated. Thank everyone for the help.

                    1 Reply Last reply Reply Quote 0
                    • U Offline
                      Uglybrian
                      last edited by

                      @Bob.Dig said in IPv6 cannot connect to Internet:

                      might be your ISP at this point.

                      Thats what i have been thinking through out this post.

                      1 Reply Last reply Reply Quote 0
                      • JKnottJ Offline
                        JKnott @crazypotato142
                        last edited by

                        @crazypotato142 said in IPv6 cannot connect to Internet:

                        pFsense itself can't connect to anything over IPv6 either.

                        I saw in your settings that you request a prefix only, not a WAN address. You might have to specify your LAN interface as the source address. You use the -s option for that.

                        PfSense running on Qotom mini PC
                        i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel 1 Gb Ethernet ports.
                        UniFi AC-Lite access point

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

                        crazypotato142C 1 Reply Last reply Reply Quote 0
                        • crazypotato142C Offline
                          crazypotato142 @JKnott
                          last edited by crazypotato142

                          @JKnott said in IPv6 cannot connect to Internet:

                          You might have to specify your LAN interface as the source address. You use the -s option for that.

                          How do I do that?

                          Also I didn't do such a thing after we got my IPv6 in this thread
                          https://forum.netgate.com/post/1217330

                          1 Reply Last reply Reply Quote 0
                          • JKnottJ Offline
                            JKnott @crazypotato142
                            last edited by

                            @crazypotato142 said in IPv6 cannot connect to Internet:

                            @JKnott
                            about 2 hours ago

                            I don't know, I still don't think it's a prefix problem because I used it as it is for a long time

                            In an earlier post I suggested you capture the DHCP6 sequence to see what prefix you're assigned, to see if it's what's actually being used. Have you tried that?

                            In the capture you'll see 4 packets:

                            1173e38f-fdff-42d1-8e52-c99545293ff1-image.png

                            Then, in the last packet, should be something like this:

                            2b23ee5b-92e5-46c6-8bc4-d7c7e82c6bf6-image.png

                            Compare the prefix with the one your network is using.

                            PfSense running on Qotom mini PC
                            i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel 1 Gb Ethernet ports.
                            UniFi AC-Lite access point

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

                            crazypotato142C 1 Reply Last reply Reply Quote 0
                            • crazypotato142C Offline
                              crazypotato142 @JKnott
                              last edited by

                              @JKnott
                              Package Capture stops when I plug the WAN cable. I'm doing it according to this: https://forum.netgate.com/topic/172514/capture-full-dhcp-or-dhcpv6-sequence

                              Update:
                              It doesn't work with the default router my ISP gave either. Prefix and IPs everything seems fine but nope, it still doesn't connect. I also checked Windows ipconfig while on it and it just showed single IP for each, prefix matched as well.

                              JKnottJ 1 Reply Last reply Reply Quote 0
                              • JKnottJ Offline
                                JKnott @crazypotato142
                                last edited by

                                @crazypotato142 said in IPv6 cannot connect to Internet:

                                Package Capture stops when I plug the WAN cable.

                                I just tried and it works fine here.

                                898ab2f0-2083-44aa-86f0-2ebaccd90a84-image.png

                                Do you have a switch that you can use to make a "data tap"?

                                PfSense running on Qotom mini PC
                                i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel 1 Gb Ethernet ports.
                                UniFi AC-Lite access point

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

                                crazypotato142C 1 Reply Last reply Reply Quote 0
                                • crazypotato142C Offline
                                  crazypotato142 @JKnott
                                  last edited by

                                  @JKnott I'll try it again later today.

                                  Unfortunately no, I don't have a managed switch.

                                  1 Reply Last reply Reply Quote 0
                                  • First post
                                    Last post
                                  Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.