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Lit Fibre (UK) IPv6 stopped after powercut

IPv6
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  • J
    JKnott @F022Y
    last edited by Mar 18, 2025, 6:48 PM

    @F022Y said in Lit Fibre (UK) IPv6 stopped after powercut:

    about 2 hours ago

    It died again, this time no IPv6 at all

    Here's what the reply packet shows:

    🔒 Log in to view

    The IA address should be the WAN interface address and the prefix address is your LAN prefix. Are you saying you're not seeing either of those? I also see you're getting a /48 prefix size. Nice you can get one that big. I only have a /56. 😭

    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
    • F
      F022Y
      last edited by Mar 18, 2025, 7:13 PM

      Just logged back into pfsense after grabbing that pcap and the interface shows connections.

      🔒 Log in to view
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      J 1 Reply Last reply Mar 18, 2025, 7:24 PM Reply Quote 0
      • J
        JKnott @F022Y
        last edited by Mar 18, 2025, 7:24 PM

        @F022Y

        Are you seeing the IPv6 pings leave your network? Perhaps there's a routing issue from your ISP. You can see the pings in packet capture, by filtering on ICMP6. You should see both the request and reply in the capture. What happens if you ping something closer than netgate? One thing you can do is traceroute to netgate or other and see how far it goes. Given the ISP is doing stuff, bad routes are a definite possibility.

        You might also try this by tethering to a cell phone and seeing if you get the same results there. If the cell connection works, you can see if your pings can reach it from your Lit Fibre connection. You may want to use Wireshark on the computer tethered to the phone.

        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
        • F
          F022Y
          last edited by Mar 18, 2025, 8:22 PM

          Nope nothing.

          🔒 Log in to view

          🔒 Log in to view

          🔒 Log in to view

          packetcapture-igc0-20250318201715.pcap

          Looks like my 3 cell connection doesn't support IPv6 so unable to test like that.

          I am right with the LAN config tho, with it being tracked to the WAN?

          🔒 Log in to view

          J 2 Replies Last reply Mar 18, 2025, 8:53 PM Reply Quote 0
          • J
            JKnott @F022Y
            last edited by Mar 18, 2025, 8:53 PM

            @F022Y said in Lit Fibre (UK) IPv6 stopped after powercut:

            Looks like my 3 cell connection doesn't support IPv6 so unable to test like that.

            ????

            IPv6 is mandatory for 4G & 5G, though some companies do a poor job with it for tethered devices. What happens if you do that IPv6 test from the phone?

            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...

            F 1 Reply Last reply Mar 18, 2025, 9:23 PM Reply Quote 0
            • J
              JKnott @F022Y
              last edited by Mar 18, 2025, 9:01 PM

              @F022Y

              That packet capture shows you're pinging a link local address:

              🔒 Log in to view

              Are you pinging the ISPs MAC on the WAN interface? Or something on your local LAN? Link local packets do not pass through a router, so it has to be something directly connected to whichever network you're on.

              In that traceroute, I see 4 successful hops, then nothing. This could indicate a routing problem beyond that last one.

              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
              • F
                F022Y @JKnott
                last edited by Mar 18, 2025, 9:23 PM

                @JKnott android on 4G and any attempts to ping or routetrace bbc.co.uk it defaults to IPv4.

                🔒 Log in to view

                🔒 Log in to view

                Address i'm pinging is either bbc or netgate i'll do another now pinging bbc.co.uk...........

                Just for giggles i've done 2 for comparison.

                Capture the LAN port
                packetcapture-igc0-20250318212104.pcap

                Capture the WAN port
                packetcapture-igc1-20250318211922.pcap

                J 1 Reply Last reply Mar 18, 2025, 9:34 PM Reply Quote 0
                • J
                  JKnott @F022Y
                  last edited by Mar 18, 2025, 9:34 PM

                  @F022Y said in Lit Fibre (UK) IPv6 stopped after powercut:

                  android on 4G and any attempts to ping or routetrace bbc.co.uk it defaults to IPv4.

                  Try test-ipv6.com. You should have IPv6 with 4G. However, your cell company may be preventing tethering from working.

                  Also, you should be trying this when connected to the cell network and not your WiFi, as the pfSense problem would affect it too.

                  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...

                  F 1 Reply Last reply Mar 18, 2025, 9:55 PM Reply Quote 0
                  • F
                    F022Y @JKnott
                    last edited by F022Y Mar 19, 2025, 10:49 AM Mar 18, 2025, 9:55 PM

                    @JKnott just tested, WiFi off and still not playing

                    Image doesn't want to appear so I'll share when back on desktop.

                    🔒 Log in to view alt text

                    G J 2 Replies Last reply Mar 19, 2025, 6:35 AM Reply Quote 0
                    • G
                      Gertjan @F022Y
                      last edited by Mar 19, 2025, 6:35 AM

                      @F022Y

                      Wow, that's imho quiet unique : an Phone 4G/5G ISP without IPv6 ... ?

                      What does this mean :

                      🔒 Log in to view

                      as I always considered that "test-ipv6.com" is clean and exempt of publicity or other stiff.

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

                      F 1 Reply Last reply Mar 19, 2025, 8:03 AM Reply Quote 0
                      • F
                        F022Y @Gertjan
                        last edited by Mar 19, 2025, 8:03 AM

                        @Gertjan it's brave browser so the left icon is that the the inbuilt "shields" are active the right one is Brave rewards.

                        G 1 Reply Last reply Mar 19, 2025, 8:46 AM Reply Quote 0
                        • G
                          Gertjan @F022Y
                          last edited by Gertjan Mar 19, 2025, 12:29 PM Mar 19, 2025, 8:46 AM

                          @F022Y

                          Yeah, get that
                          And why the red triangle with the warning ?
                          "test-ipv6.com is script based, and the script ... tests the IPv6 capabilities. If something failed, it shows you are IPv4 only, and maybe this isn't the case.

                          I find it still hard to believe yo use a phone connection without IPv6 ... There are no free IPv6 IPv4 ! left, no where, and people didn't stop buying phones, so IPv6 isn't really an option these days.

                          Are you sure IPv6 isn't disabled in your phone ? Just asking, as I don't recognize what phone OS you are using, it doesn't look like mine.

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

                          F 1 Reply Last reply Mar 19, 2025, 9:30 AM Reply Quote 0
                          • F
                            F022Y @Gertjan
                            last edited by F022Y Mar 19, 2025, 9:31 AM Mar 19, 2025, 9:30 AM

                            @Gertjan sorry not following.

                            The right icon, the triangle is brave rewards so the warning is that brave rewards is not contributing to the page.

                            "I find it still hard to believe yo use a phone connection without IPv6 ... There are no free IPv6 left, no where, and people didn't stop buying phones, so IPv6 isn't really an option these days."

                            I presume you meant IPv4 here?

                            As for phone OS, bog standard Android 15 with March security patches on a pixel 9 pro and ipv6 is enabled as test-ipv6.com worked fine when fibre service was.

                            G 1 Reply Last reply Mar 19, 2025, 9:45 AM Reply Quote 0
                            • G
                              Gertjan @F022Y
                              last edited by Gertjan Mar 19, 2025, 12:31 PM Mar 19, 2025, 9:45 AM

                              @F022Y said in Lit Fibre (UK) IPv6 stopped after powercut:

                              I presume you meant IPv4 here?

                              👍
                              Great, yeah, you're right.

                              edit : your phone OS seems recent.
                              So it's your "phone data carrier ISP" ....
                              Very soon, they will have IPv6 - or leave the market.

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

                              1 Reply Last reply Reply Quote 0
                              • J
                                JKnott @F022Y
                                last edited by Mar 19, 2025, 2:17 PM

                                @F022Y said in Lit Fibre (UK) IPv6 stopped after powercut:

                                Image doesn't want to appear so I'll share when back on desktop.

                                That's surprising. That's on your cell network, not WiFi?

                                Maybe you should ask your cell carrier about that. Also, depending on your plan, you may or may not have tethering. You can ask about that too.

                                As I said yesterday, I suspect your IPv6 problem may be due to the work your ISP is doing to merge companies. Maybe you can ask them about that too.

                                The reason the cell networks are supposed to have IPv6 is they're moving to VoIP, with VoLTE on 4G and VoNR on 5G. That requires a network working the way the network gods intended, without crap like NAT getting in the way.

                                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...

                                F 1 Reply Last reply Mar 19, 2025, 2:21 PM Reply Quote 0
                                • F
                                  F022Y @JKnott
                                  last edited by Mar 19, 2025, 2:21 PM

                                  @JKnott Must admit i was expecting it too lol

                                  Yes thats just on cellular with the wifi disabled. Tethering works fine but same result

                                  🔒 Log in to view

                                  I've dropped an email to their support and referenced this forum post

                                  1 Reply Last reply Reply Quote 0
                                  • F
                                    F022Y
                                    last edited by F022Y Mar 19, 2025, 4:30 PM Mar 19, 2025, 4:28 PM

                                    Got my first response.

                                    🔒 Log in to view

                                    I have advised that traceroutes are hitting an address outside of my local range so see what is said.

                                    Does it matter at all that the service is CG-Nat but i pay for a static IPv4? CG-Nat isn't something i'm hugely familar with

                                    J G 2 Replies Last reply Mar 19, 2025, 6:43 PM Reply Quote 0
                                    • F
                                      F022Y
                                      last edited by Mar 19, 2025, 6:01 PM

                                      Looks like it's my config but i can't see where as I thought tracking the WAN interface for LAN should work.

                                      🔒 Log in to view

                                      WAN interface:-
                                      🔒 Log in to view

                                      LAN interface:-
                                      🔒 Log in to view

                                      Should the prefix ID here be set to 48 also?

                                      J 1 Reply Last reply Mar 19, 2025, 6:48 PM Reply Quote 0
                                      • J
                                        JKnott @F022Y
                                        last edited by Mar 19, 2025, 6:43 PM

                                        @F022Y said in Lit Fibre (UK) IPv6 stopped after powercut:

                                        I have advised that traceroutes are hitting an address outside of my local range so see what is said.

                                        Yeah, it can be fun dealing with an ISP's help(?) desk. About 6 years ago, I had a problem with IPv6 on mine. I was able to use my cell phone to help prove things. I was able to demonstrate to someone on 2nd level support (I rarely waste my time with 1st level) that the problem was not on my end, but those who should have investigated further didn't do anything. I did more testing on my own, with Wireshark, and saw an error message in the DHCP6 sequence which identified the failing equipment by host name. Even then, they wouldn't do anything. Eventually, a senior tech came to my home with his own computer and cable modem and also experienced the same failure. He then went to the office I was connected to and tried with 4 different CMTS. It failed only on the one I was connected to and precisely the one I had identified. Only then was the problem resolved. Also, in all this, I found I had to teach the people at my ISP about IPv6, because I knew more about it than they did!

                                        Side note, 2 years ago, I was doing some work in that ISP's office and actually found the CMTS I was connected to. 😉

                                        Does it matter at all that the service is CG-Nat but i pay for a static IPv4? CG-Nat isn't something i'm hugely familar with

                                        CGNAT is how you get IPv4 and should have nothing to do with IPv6. However, static IPv4 and CGNAT are contradictory. If you have a static address, it shouldn't be through NAT. Is your address in the range 100.64.0.0 to 100.127.255.255, as normally used for CGNAT?
                                        BTW, I would expect CGNAT to be used on your cell phone. If your cell provider supports IPv6, I would expect your phone's IPv4 address to be something like 192.0.0.4, which is used with something called 464XLAT, which is used to convert IPv4 to IPv6 for an IPv6 only network, as I have with my cell phone.

                                        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...

                                        F 1 Reply Last reply Mar 19, 2025, 7:44 PM Reply Quote 0
                                        • J
                                          JKnott @F022Y
                                          last edited by Mar 19, 2025, 6:48 PM

                                          @F022Y said in Lit Fibre (UK) IPv6 stopped after powercut:

                                          Should the prefix ID here be set to 48 also?

                                          No. On a /48, it could be anything between 0 & 65,535, your choice. You'd use a different number for each local network interface you have. For example, my main LAN is 0 and my guest WiFi is 3. I also have a VPN, which is 255.

                                          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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