Navigation

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

    How to setup IPv6 on PFsense behind ER-X (ISP modem)

    IPv6
    3
    30
    931
    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.
    • A
      appollonius333 last edited by

      Hello all,

      I am already struggling with this issue for 2 days now and I cannot seem to get it to work...
      What I am trying to accomplish is to get IPv6 addresses to my LAN(s) network.
      From my ISP I am getting a /48 subnet which divides it to a /64 subnet on my ER-X (For my homenetwork itself).

      Now I have a small rack with servers and I got a dedicated box which I am using for PFsense.

      So on my PFsense box on the WAN interface I got the following configurations applied:

      IPv6 Configuration Type: DHCPv6

      Use IPv4 connectivity as parent interface: Check marked
      DHCPv6 Prefix Delegation size: 64 (This is because the LAN on the ER-X is /64 as well.)
      Send IPv6 prefix hint: Check marked

      Until this far there are no issues, the WAN interface gets an IPv6 from the ER-X so all is fine. Now it is the LAN side with multiple LAN interfaces (No VLANS).

      Here are the LAN configuration(s):
      IPv6 Configuration Type: Static
      IPv6 Address: IPv6 address/80
      Use IPv4 connectivity as parent interface: Check Marked

      After this I also configured the DHCPv6 & RA server:
      Here is a screenshot of the DHCPv6 server:
      b51c9cd2-66dc-4fa7-87c5-ccc00e601baf-image.png

      And here is a screenshot of the RA configurations:
      d5acefb6-4ef3-438c-86ab-eba7d50165e0-image.png

      And after applying these configurations I still dont get any IPv6 address assigned to my VM's within the ESXi environment.

      Does someone know what the problem is here? I am at lost currently..

      JKnott 1 Reply Last reply Reply Quote 0
      • JKnott
        JKnott @appollonius333 last edited by

        @appollonius333

        What's with that /80 subnet mask? LANs are supposed to b /64. Since you have a /48 prefix, you have 65536 to choose from. Also, you have to use a unique prefix ID for each interface.

        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...

        A 1 Reply Last reply Reply Quote 1
        • A
          appollonius333 @JKnott last edited by appollonius333

          @jknott Well someone told me it is 'best practice' to use /80 because from my ISP I get /48 and my ER-X assigns a /64 from that to my home network. But my PFsense which is behind the ER-X has a /64 on the WAN port as well. So they said it is best practice to use /80 on LAN(s).

          This PFsense machine is specifically used for my HomeLAB environment, the ER-X is used for all ISP related connectivities, also the Home LAN network.

          JKnott 1 Reply Last reply Reply Quote 0
          • JKnott
            JKnott @appollonius333 last edited by

            @appollonius333

            That is not best practice. Best practice is a /64, as anything else will break things such a SLAAC. I know you have only 65536 /64s to work with, but you still shouldn't need a /80.

            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...

            A 1 Reply Last reply Reply Quote 2
            • A
              appollonius333 @JKnott last edited by

              @jknott I will keep that in mind, thank you for the tip :) As I am not that experienced with IPv6. So looking at my main post what would be the first thing to do for me to get my setup to work?

              JKnott 1 Reply Last reply Reply Quote 0
              • JKnott
                JKnott @appollonius333 last edited by

                @appollonius333

                Yep. BTW, I have been using IPv6 on my network for almost 11 years.

                One piece of advice I often give is to keep things simple. Get it working first. Since you apparently have multiple LANs, get one going first, then add the others, repeating what you did with the first, but using a unique prefix ID.

                Just last week, I built a new pfsense firewall, as the computer I had previously run it on died. My first goal was to get it working with just the WAN & LAN. Then I imported my previous config and made sure my VLAN and test LAN worked. And this morning, I redid my OpenVPN config. When you do things in a step by step manner, instead of Trying to do everything at once, you can see what might be causing the problems.

                Also, get in the habit of downloading config backups. It just takes a few seconds, but make it easy to back out of a bad config.

                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...

                A 1 Reply Last reply Reply Quote 0
                • A
                  appollonius333 @JKnott last edited by

                  @jknott What do you mean by Unique Prefix ID? The /subnet notation or this part: ab997d24-9f15-43be-9d6e-5c96cc884394-image.png

                  JKnott 1 Reply Last reply Reply Quote 0
                  • JKnott
                    JKnott @appollonius333 last edited by

                    @appollonius333

                    In the "IPv6 Prefix ID" box, you put a unique ID for each interface. Typically, you'd use 0 for the main LAN, but you could choose whatever you want within the range of 0 - ffff. I have a /56 and use 0 for main, 3 for my guest WiFi VLAN, 4 for my test LAN and ff for my OpenVPN tunnel. As I mentioned, the subnet should always be /64 for LANs.

                    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...

                    A 1 Reply Last reply Reply Quote 0
                    • A
                      appollonius333 @JKnott last edited by

                      @jknott Ahh, but when I do that I get this error and I don't know why, couldnt find anything about it which I could understand...

                      The specified IPv6 Prefix ID is out of range. (wan) - (0) - (0)

                      JKnott 1 Reply Last reply Reply Quote 0
                      • JKnott
                        JKnott @appollonius333 last edited by

                        @appollonius333

                        Are you getting a /48? And what values are you selecting?

                        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...

                        A 1 Reply Last reply Reply Quote 0
                        • A
                          appollonius333 @JKnott last edited by

                          @jknott Yeah I am getting a /48 on the ER-X, which delegates a /64 to my HomeLAN, where my PFsense is connected to.

                          I have selected these values on the WAN interface and DHCP6 configuration:
                          b5c79dd8-1d4e-4c9a-b763-c56844c21994-image.png

                          JKnott 1 Reply Last reply Reply Quote 0
                          • JKnott
                            JKnott @appollonius333 last edited by

                            @appollonius333

                            Any reason you're using DHCPv6? Generally, SLAAC is used. Also, Android devices won't work with DHCPv6, as for some unfathomable reason it's not supported.

                            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...

                            A 1 Reply Last reply Reply Quote 0
                            • A
                              appollonius333 @JKnott last edited by

                              @jknott Yeah when I do that I don't see any IPv6 addresses assigned to my WAN interface. It just has a Link Local address now

                              JKnott 2 Replies Last reply Reply Quote 0
                              • JKnott
                                JKnott @appollonius333 last edited by JKnott

                                @appollonius333

                                Actually, that's entirely normal. Link local addresses are often used for routing. If there is a public WAN address, it's likely not used for routing. Did you have one before?

                                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...

                                A 1 Reply Last reply Reply Quote 0
                                • A
                                  appollonius333 @JKnott last edited by

                                  @jknott yeah when I configured the WAN interface as DHCP6. But this means that I should see a Ipv6 Address on the LAN interface?

                                  JKnott 1 Reply Last reply Reply Quote 0
                                  • JKnott
                                    JKnott @appollonius333 last edited by

                                    @appollonius333

                                    No, one has nothing to do with the other. I have DHCPv6-PD on the WAN side and SLAAC on the LAN side. The nice thing about SLAAC is it works without any configuration needed. The router advertises the 64 bit LAN prefix and the client provides the lower 64 bits, based on either the MAC address or a random number.

                                    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 1
                                    • JKnott
                                      JKnott @appollonius333 last edited by

                                      @appollonius333 said in How to setup IPv6 on PFsense behind ER-X (ISP modem):

                                      eah when I do that I don't see any IPv6 addresses assigned to my WAN interface. It just has a Link Local address now

                                      Here's my configuration. You should have 48, instead of 56 for the prefix size.

                                      8c3b22bb-c757-4506-827b-9f5690ca9958-image.png

                                      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...

                                      A 1 Reply Last reply Reply Quote 0
                                      • A
                                        appollonius333 @JKnott last edited by appollonius333

                                        @jknott Would the /48 still apply when the PFsense machine gets a /64 address from the /64 LAN subnet on the ER-X? Also where do you use the DHCP6 Client Configuration on? The LAN interface?

                                        A 1 Reply Last reply Reply Quote 0
                                        • A
                                          appollonius333 @appollonius333 last edited by appollonius333

                                          @JKnott

                                          This is how my Network looks:
                                          cf50af06-ab7e-4005-9b37-687a5fd81f3f-image.png

                                          JKnott 1 Reply Last reply Reply Quote 0
                                          • JKnott
                                            JKnott @appollonius333 last edited by

                                            @appollonius333

                                            Is that ER-X in bridge or gateway mode? You want bridge mode for pfsense to provide multiple /64s. Otherwise, you're only getting a single /64 from your ISP, not a /48.

                                            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...

                                            A 1 Reply Last reply Reply Quote 0
                                            • A
                                              appollonius333 @JKnott last edited by

                                              @jknott the Er-X is a gateway, so it receives and has all the settings for TV, phones etc. KPN in the Netherlands is giving us a /48 subnet on residential connections

                                              JKnott 1 Reply Last reply Reply Quote 0
                                              • JKnott
                                                JKnott @appollonius333 last edited by

                                                @appollonius333

                                                If you're in gateway mode, you do not have a /48. I have a similar setup, with Rogers in Canada. I have a box that provides Internet, IPTV and phone. I put it into bridge mode, as in gateway mode it would provide only a single /64. In bridge mode I get a /56. Also, in bridge mode you'll get a public IPv4 address, unless your ISP uses carrier grade NAT.

                                                Bridge vs gateway mode should have no effect on the other services. In my case, the home phone plugs into the modem. The IPTV works on the same network as my 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...

                                                A 1 Reply Last reply Reply Quote 0
                                                • A
                                                  appollonius333 @JKnott last edited by appollonius333

                                                  @jknott Yeah the ISP gives us a /48. But from that /48 a /64 is assigned to my LAN environment.
                                                  I don't think it is in either mode to be honest.
                                                  The bridge mode I know, but gateway mode well we don't use that here in NL I think.

                                                  JKnott 1 Reply Last reply Reply Quote 0
                                                  • JKnott
                                                    JKnott @appollonius333 last edited by

                                                    @appollonius333

                                                    I noticed your IPv4 address, which is within the RFC1918 range and indicates NAT is used. You don't want that. Put it in bridge mode or you will not be able to use most of the /48. There's no two ways about 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...

                                                    A 1 Reply Last reply Reply Quote 0
                                                    • A
                                                      appollonius333 @JKnott last edited by

                                                      @jknott I think I need to get things a bit more straight. As I think the information that is giving or interpreted by you is not applicable to me. Of course thanks for that :)

                                                      My Network works as follows:

                                                      From KPN in the Netherlands I get a Public IPv4 address and a IPv6 /48 subnet assigned to my ER-X. Which is a replacement of the 'standard' ExperiaBox v10 which is provided by KPN.
                                                      On the ER-X are all the VLANS created for Telephone, TV and the LAN network itself, so all the information that would be standard on the ExperiaBox v10 are configured on the ER-X.

                                                      From here on the LAN side on the ER-X is assigned a IPv4 192.168.2.x/24 and a IPv6 2a02:a44c:xxxx:1::1/64 network. So all my home devices are connected to that (Of course there is a switch connected to the ER-X, so we can use more ports).

                                                      On the ER-X I also connected my physical PFsense (Dell R210 II) machine directly to port 3. so this also gets a 192.168.2.x/24 IP-address on the WAN side.

                                                      The WAN side also gets an IPv6 address (When configured with DHCP6) 2a02:a44c:xxxx:1::xxxx/64 so it gets an IPv6 address from the ER-X. Now I also want to have IPv6 address on the LAN side of PFsense.

                                                      So I need to divide the IPv6 /64 subnet on the LAN side of PFsense to be able to have IPv6 addresses assigned to my VM's in VMware ESXi.

                                                      I don't want the PFsense to hold onto the whole home network, I only want to use it for my HomeLAB network.

                                                      I hope this makes it a bit clearer :)

                                                      JKnott 1 Reply Last reply Reply Quote 0
                                                      • JKnott
                                                        JKnott @appollonius333 last edited by

                                                        @appollonius333

                                                        Perhaps you should call your tech support and ask about this. As I mentioned, I had no problem putting a similar device in to bridge mode. You cannot split a /64 on a LAN and expect things to work properly, as the entire IPv6 address is based on a 64 bit network portion and 64 bit host portion. If you try to use a /80 or whatever, fundamental parts of IPv6, such as SLAAC, will fail.

                                                        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...

                                                        A 1 Reply Last reply Reply Quote 0
                                                        • A
                                                          appollonius333 @JKnott last edited by

                                                          @jknott Haha well to be honest 'calling tech support' at KPN is not the thing I would prefer to do. They just refer you to the 'forums' of KPN. Have had my 2 cents with them in the past, they do not know that 'much' about IPv6... unfortunately. Otherwise I wouldn't have bother this forum and especially not you :)

                                                          JKnott T 2 Replies Last reply Reply Quote 0
                                                          • JKnott
                                                            JKnott @appollonius333 last edited by

                                                            @appollonius333

                                                            Please see what you can do about getting into bridge mode. I've tried to explain the facts to you as best I can. If you will not accept them, then I can't help you.

                                                            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
                                                            • T
                                                              tadao @appollonius333 last edited by

                                                              @appollonius333 The only way I could get IPv6 traffic from LAN to the Internet, was adding a Outbound NAT (SNAT) rule as follows:

                                                              Interface: WAN
                                                              Protocol: any
                                                              Source: Any
                                                              Destination: Any
                                                              Translation/Address: Interface Address
                                                              Port or Range: (blank)

                                                              This is to force all the packets going out from LAN to have the WAN Interface Address.
                                                              Remember that the WAN interface on pfSense is the DMZ IP in the configuration of the ISP router/modem in the LAN interface of the router/modem.

                                                              T 1 Reply Last reply Reply Quote 0
                                                              • T
                                                                tadao @tadao last edited by

                                                                @tadao I forgot to mention that the WAN Interface Address of the pfSense must be set to DMZ IP on the ISP router/modem.

                                                                1 Reply Last reply Reply Quote 0
                                                                • First post
                                                                  Last post