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

    IPV6 Prefix ID issue after upgrading to 23.05.1

    Scheduled Pinned Locked Moved IPv6
    21 Posts 4 Posters 2.9k Views
    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
      JKnott @Gertjan
      last edited by

      @Gertjan said in IPV6 Prefix ID issue after upgrading to 23.05.1:

      see my failing ISP router : dhcp6-clienst (pfSense) asks for 3 /64 prefixes, ISP router only offers one (1).

      Does your ISP offer more than 1 /64? Some ISPs are d*mn cheap! Is your modem in bridge mode? You need it to get IPv6 to the LAN.

      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...

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

        @Gertjan said in IPV6 Prefix ID issue after upgrading to 23.05.1:

        Just a wild guess : take your pfSense 2.7.0, note the MAC of its WAN.
        Copy it over to the WAN of the pfSense plus.

        Or try rebooting the modem. Some require that with a different MAC.

        Does IPv4 work properly? If so, that would rule out the MAC issue.

        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...

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

          @Gertjan said in IPV6 Prefix ID issue after upgrading to 23.05.1:

          dhcp6-clienst (pfSense) asks for 3 /64 prefixes

          How the heck do you manage that? You specify a prefix length, not the number of prefixes you want.

          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...

          GertjanG 1 Reply Last reply Reply Quote 0
          • GertjanG
            Gertjan @JKnott
            last edited by

            @JKnott said in IPV6 Prefix ID issue after upgrading to 23.05.1:

            How the heck do you manage that? You specify a prefix length, not the number of prefixes you want.

            "Home made" dhcp6c config file.

            See here.
            ( Google translate mandatory ^^ )

            I'm waiting for the new firmware to be released.

            No "help me" PM's please. Use the forum, the community will thank you.
            Edit : and where are the logs ??

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

              @Gertjan said in IPV6 Prefix ID issue after upgrading to 23.05.1:

              How the heck do you manage that? You specify a prefix length, not the number of prefixes you want.

              "Home made" dhcp6c config file.

              You specify the prefix length, which means only powers of 2. Last I checked, 3 wasn't a power of 2.

              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...

              1 Reply Last reply Reply Quote 0
              • RobbieTTR
                RobbieTT @Appletower
                last edited by RobbieTT

                @Appletower
                There have been a few slight oddities with v23.05.1 with IPv6 in certain configurations. Often a reboot is all it takes but there are a few config tweaks on IPv6 that can help, if needed.

                v23.09 dev seems (so far) slightly better with IPv6, which is reassuring.

                As you didn't mention them, don't forget about the 2 pages under this tab, especially RAs and Router mode:

                 2023-09-05 at 15.43.17.png

                ☕️

                A 1 Reply Last reply Reply Quote 0
                • A
                  Appletower @RobbieTT
                  last edited by

                  @RobbieTT Thanks for your feedback on de dev release. What worked for me (until release 23.05.1) was the following config:

                  • WAN VLAN 100 for getting a connection with my ISP
                  • System - Advanced - Networking: Allow IPV6 checked, Do not allow PD/Address release checked
                  • Interface - WAN: IPv6 Configuration type selected DHCP6, DHCP6 Prefix size 56, Request only an IPv6 prefix checked
                  • Interface - Opt2 with VLAN 10: IPv6 configuration type is track interface, IPv6 interface WAN selected and IPv6 prefix ID is 1

                  Here it already is getting odd, because on the dashboard under interface, I now see under WAN 2 IP addresses (my IPv4 and my local IPv6), but under Opt2 I only see my IPv4 and nothing regarding IPv6.

                  Then under Services - DHCPv6 Server & RA:

                  DHCP:

                  • DHCPv6 enabled for this interface
                  • using range ::AA - ::FFF
                  • prefix deligation size 64
                  • Provide DNS servers to DHCPv6 clients selected

                  RA:

                  • Router mode: managed
                  • Provide DNS configuration via radvd & Use same settings as DHCPv6 server are both selected

                  This worked, but suddenly ... no IPv6 addresses anymore with the latest release.

                  RobbieTTR 1 Reply Last reply Reply Quote 0
                  • RobbieTTR
                    RobbieTT @Appletower
                    last edited by

                    @Appletower

                    Yep, I had similar ripples but more intermittent. Switching to 'Assisted' mode helped enormously (and cured a small issue with Apple HomePods & HomeKit that, in itself, was triggered by an Apple update).

                    These settings worked for me (of course, use /56 rather than my /48):

                     2023-09-05 at 16.20.46.png

                     2023-09-05 at 16.20.46.png

                    Switching to Assisted mode (as recommended by a Netgate dev) was the 'magic' key for me.

                    ☕️

                    A 1 Reply Last reply Reply Quote 0
                    • A
                      Appletower @RobbieTT
                      last edited by

                      @RobbieTT Updated my pfsense install to the latest DEV release, switched from Managed to Assisted...still no IPv6 on my interfaces :-(

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

                        @Appletower said in IPV6 Prefix ID issue after upgrading to 23.05.1:

                        switched from Managed to Assisted...still no IPv6 on my interfaces

                        Those have to do with DHCPv6 on the local LAN and have nothing to do with whether you get IPv6. I use unmanaged here.

                        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...

                        1 Reply Last reply Reply Quote 0
                        • A
                          Appletower
                          last edited by

                          Thanks for all your support guys, but nothing seems to work on my Qotom pfsense box with this release. Did a new install with CE2.7 and there it works fine. As soon as I upgrade to 23.05.1 the IPv6 network doesn't get any IP addresses. Therefor will put by Qotom box on the shelf for now and re-use my Dell R320-II for the time being. Looking forward for an improved pfsense release.

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