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    IPv6 Issues since upgrading

    Scheduled Pinned Locked Moved General pfSense Questions
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    • stephenw10S Offline
      stephenw10 Netgate Administrator
      last edited by

      That looks like the successful case. What does it show when it fails?

      J 1 Reply Last reply Reply Quote 0
      • J Offline
        jordanp123 @stephenw10
        last edited by

        @stephenw10
        It failed, I have no IPV6 default route.

        1 Reply Last reply Reply Quote 0
        • stephenw10S Offline
          stephenw10 Netgate Administrator
          last edited by

          @jordanp123 said in IPv6 Issues since upgrading:

          Aug 1 12:45:30 dhcp6c 41725 receive reply from fe80::2ec8:1bff:fe03:9b13%vtnet1 on vtnet1

          Hmm, yet it is adding addresses and knows what the gateway is....

          How does that compare with the successful case?

          J 1 Reply Last reply Reply Quote 0
          • J Offline
            jordanp123 @stephenw10
            last edited by

            @stephenw10
            With the manually added static GW.

            Aug 1 13:56:50 dhcp6c 39855 extracted an existing DUID from /var/db/dhcp6c_duid: 00:01:00:01:2b:b0:e9:8d:66:9f:b4:58:90:62
            Aug 1 13:56:50 dhcp6c 39855 failed to open /usr/local/etc/dhcp6cctlkey: No such file or directory
            Aug 1 13:56:50 dhcp6c 39855 failed initialize control message authentication
            Aug 1 13:56:50 dhcp6c 39855 skip opening control port
            Aug 1 13:56:50 dhcp6c 39855 <3>[interface] (9)
            Aug 1 13:56:50 dhcp6c 39855 <5>[vtnet1] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>begin of closure [{] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[send] (4)
            Aug 1 13:56:50 dhcp6c 39855 <3>[ia-na] (5)
            Aug 1 13:56:50 dhcp6c 39855 <3>[0] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>comment [# request stateful address] (26)
            Aug 1 13:56:50 dhcp6c 39855 <3>[send] (4)
            Aug 1 13:56:50 dhcp6c 39855 <3>[ia-pd] (5)
            Aug 1 13:56:50 dhcp6c 39855 <3>[0] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>comment [# request prefix delegation] (27)
            Aug 1 13:56:50 dhcp6c 39855 <3>[request] (7)
            Aug 1 13:56:50 dhcp6c 39855 <3>[domain-name-servers] (19)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[request] (7)
            Aug 1 13:56:50 dhcp6c 39855 <3>[domain-name] (11)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[script] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>["/var/etc/dhcp6c_wan_script.sh"] (31)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>comment [# we'd like some nameservers please] (35)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of closure [}] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[id-assoc] (8)
            Aug 1 13:56:50 dhcp6c 39855 <13>[na] (2)
            Aug 1 13:56:50 dhcp6c 39855 <13>[0] (1)
            Aug 1 13:56:50 dhcp6c 39855 <13>begin of closure [{] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of closure [}] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[id-assoc] (8)
            Aug 1 13:56:50 dhcp6c 39855 <13>[pd] (2)
            Aug 1 13:56:50 dhcp6c 39855 <13>[0] (1)
            Aug 1 13:56:50 dhcp6c 39855 <13>begin of closure [{] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[prefix] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>[::] (2)
            Aug 1 13:56:50 dhcp6c 39855 <3>[/] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[58] (2)
            Aug 1 13:56:50 dhcp6c 39855 <3>[infinity] (8)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[prefix-interface] (16)
            Aug 1 13:56:50 dhcp6c 39855 <5>[vtnet2] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>begin of closure [{] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-id] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>[3] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-len] (7)
            Aug 1 13:56:50 dhcp6c 39855 <3>[6] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of closure [}] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[prefix-interface] (16)
            Aug 1 13:56:50 dhcp6c 39855 <5>[vtnet0.6] (8)
            Aug 1 13:56:50 dhcp6c 39855 <3>begin of closure [{] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-id] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>[0] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-len] (7)
            Aug 1 13:56:50 dhcp6c 39855 <3>[6] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of closure [}] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[prefix-interface] (16)
            Aug 1 13:56:50 dhcp6c 39855 <5>[vtnet0.4] (8)
            Aug 1 13:56:50 dhcp6c 39855 <3>begin of closure [{] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-id] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>[2] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-len] (7)
            Aug 1 13:56:50 dhcp6c 39855 <3>[6] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of closure [}] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[prefix-interface] (16)
            Aug 1 13:56:50 dhcp6c 39855 <5>[vtnet0.5] (8)
            Aug 1 13:56:50 dhcp6c 39855 <3>begin of closure [{] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-id] (6)
            Aug 1 13:56:50 dhcp6c 39855 <3>[1] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>[sla-len] (7)
            Aug 1 13:56:50 dhcp6c 39855 <3>[6] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of closure [}] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of closure [}] (1)
            Aug 1 13:56:50 dhcp6c 39855 <3>end of sentence [;] (1)
            Aug 1 13:56:50 dhcp6c 39855 called
            Aug 1 13:56:50 dhcp6c 39855 called
            Aug 1 13:56:50 dhcp6c 39971 reset a timer on vtnet1, state=INIT, timeo=0, retrans=891
            Aug 1 13:56:51 dhcp6c 39971 Sending Solicit
            Aug 1 13:56:51 dhcp6c 39971 a new XID (c9bf81) is generated
            Aug 1 13:56:51 dhcp6c 39971 set client ID (len 14)
            Aug 1 13:56:51 dhcp6c 39971 set identity association
            Aug 1 13:56:51 dhcp6c 39971 set elapsed time (len 2)
            Aug 1 13:56:51 dhcp6c 39971 set option request (len 4)
            Aug 1 13:56:51 dhcp6c 39971 set IA_PD prefix
            Aug 1 13:56:51 dhcp6c 39971 set IA_PD
            Aug 1 13:56:51 dhcp6c 39971 transmit failed: Can't assign requested address
            Aug 1 13:56:51 dhcp6c 39971 reset a timer on vtnet1, state=SOLICIT, timeo=0, retrans=1091
            Aug 1 13:56:52 dhcp6c 39971 Sending Solicit
            Aug 1 13:56:52 dhcp6c 39971 set client ID (len 14)
            Aug 1 13:56:52 dhcp6c 39971 set identity association
            Aug 1 13:56:52 dhcp6c 39971 set elapsed time (len 2)
            Aug 1 13:56:52 dhcp6c 39971 set option request (len 4)
            Aug 1 13:56:52 dhcp6c 39971 set IA_PD prefix
            Aug 1 13:56:52 dhcp6c 39971 set IA_PD
            Aug 1 13:56:52 dhcp6c 39971 send solicit to ff02::1:2%vtnet1
            Aug 1 13:56:52 dhcp6c 39971 reset a timer on vtnet1, state=SOLICIT, timeo=1, retrans=2083
            Aug 1 13:56:52 dhcp6c 39971 receive advertise from fe80::2ec8:1bff:fe03:9b13%vtnet1 on vtnet1
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option client ID, len 14
            Aug 1 13:56:52 dhcp6c 39971 DUID: 00:01:00:01:2b:b0:e9:8d:66:9f:b4:58:90:62
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option server ID, len 10
            Aug 1 13:56:52 dhcp6c 39971 DUID: 00:03:00:01:2c:c8:1b:03:9b:13
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option preference, len 1
            Aug 1 13:56:52 dhcp6c 39971 preference: 255
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option IA_PD, len 41
            Aug 1 13:56:52 dhcp6c 39971 IA_PD: ID=0, T1=43200, T2=69120
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option IA_PD prefix, len 25
            Aug 1 13:56:52 dhcp6c 39971 IA_PD prefix: X::/58 pltime=77760 vltime=86400
            Aug 1 13:56:52 dhcp6c 39971 server ID: 00:03:00:01:2c:c8:1b:03:9b:13, pref=255
            Aug 1 13:56:52 dhcp6c 39971 Sending Request
            Aug 1 13:56:52 dhcp6c 39971 a new XID (5ae09e) is generated
            Aug 1 13:56:52 dhcp6c 39971 set client ID (len 14)
            Aug 1 13:56:52 dhcp6c 39971 set server ID (len 10)
            Aug 1 13:56:52 dhcp6c 39971 set elapsed time (len 2)
            Aug 1 13:56:52 dhcp6c 39971 set option request (len 4)
            Aug 1 13:56:52 dhcp6c 39971 set IA_PD prefix
            Aug 1 13:56:52 dhcp6c 39971 set IA_PD
            Aug 1 13:56:52 dhcp6c 39971 send request to ff02::1:2%vtnet1
            Aug 1 13:56:52 dhcp6c 39971 reset a timer on vtnet1, state=REQUEST, timeo=0, retrans=911
            Aug 1 13:56:52 dhcp6c 39971 receive reply from fe80::2ec8:1bff:fe03:9b13%vtnet1 on vtnet1
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option client ID, len 14
            Aug 1 13:56:52 dhcp6c 39971 DUID: 00:01:00:01:2b:b0:e9:8d:66:9f:b4:58:90:62
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option server ID, len 10
            Aug 1 13:56:52 dhcp6c 39971 DUID: 00:03:00:01:2c:c8:1b:03:9b:13
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option IA_PD, len 41
            Aug 1 13:56:52 dhcp6c 39971 IA_PD: ID=0, T1=43200, T2=69120
            Aug 1 13:56:52 dhcp6c 39971 get DHCP option IA_PD prefix, len 25
            Aug 1 13:56:52 dhcp6c 39971 IA_PD prefix: X::/58 pltime=77760 vltime=86400
            Aug 1 13:56:52 dhcp6c 39971 dhcp6c Received REQUEST
            Aug 1 13:56:52 dhcp6c 39971 make an IA: PD-0
            Aug 1 13:56:52 dhcp6c 39971 create a prefix X::/58 pltime=77760, vltime=86400
            Aug 1 13:56:52 dhcp6c 39971 add an address X/64 on vtnet2
            Aug 1 13:56:52 dhcp6c 39971 add an address X/64 on vtnet0.6
            Aug 1 13:56:52 dhcp6c 39971 add an address X/64 on vtnet0.4
            Aug 1 13:56:52 dhcp6c 39971 add an address X/64 on vtnet0.5
            Aug 1 13:56:52 dhcp6c 39971 executes /var/etc/dhcp6c_wan_script.sh
            Aug 1 13:56:52 dhcp6c 48503 dhcp6c RELEASE, REQUEST or EXIT on vtnet1 running rc.newwanipv6
            Aug 1 13:56:52 dhcp6c 39971 script "/var/etc/dhcp6c_wan_script.sh" terminated
            Aug 1 13:56:52 dhcp6c 39971 removing an event on vtnet1, state=REQUEST
            Aug 1 13:56:52 dhcp6c 39971 removing server (ID: 00:03:00:01:2c:c8:1b:03:9b:13)
            Aug 1 13:56:52 dhcp6c 39971 got an expected reply, sleeping.

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            • gregeehG Offline
              gregeeh @stephenw10
              last edited by

              @stephenw10 said in IPv6 Issues since upgrading:

              You must have a globally routable IPv6 address somewhere though.

              Yes, I can understand that and I can ping IPv6 addresses from pfSense but not from any of the LAN clients. The LAN clients to have IPv6 addresses. I enabled "Do not wait for RA" in the WAN DHCP6 Options and this is how my system looks now.

              alt text

              alt text

              [2.7.0-RELEASE][admin@pfSense.localdomain]/root: ifconfig re0
              re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      description: WAN
                     options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
                      ether 00:e0:4c:68:1b:b2
                      inet6 fe80::2e0:4cff:fe68:1bb2%re0 prefixlen 64 scopeid 0x1
                      inet6 2402:7940:f000:200::111 prefixlen 128
                      inet 103.85.37.84 netmask 0xfffffc00 broadcast 103.85.39.255
                      media: Ethernet autoselect (1000baseT <full-duplex>)
                      status: active
                      nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
              [2.7.0-RELEASE][admin@pfSense.localdomain]/root:
              

              The IPv6 gateway address shown for the WAN gateway in the GUI does not appear in the ifconfig results. Surely something is wrong here.

              PfSense running on Qotom mini PC
              CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
              UniFi AC-Lite access point

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              • stephenw10S Offline
                stephenw10 Netgate Administrator
                last edited by

                The gateway would be in the routing table not the ifconfig output. The only time you'd see it there is if it's a point to point connection like ovpn or ppp.

                Can you ping out from pfSense's LAN side IPv6 address? If you can but not from clients it's probably a missing firewall rule. If not it's probably a missing route.

                gregeehG 1 Reply Last reply Reply Quote 0
                • gregeehG Offline
                  gregeeh @stephenw10
                  last edited by

                  @stephenw10 said in IPv6 Issues since upgrading:

                  The gateway would be in the routing table not the ifconfig output.

                  OK, that makes sense. Here's the netstat output:

                  [2.7.0-RELEASE][admin@pfSense.localdomain]/root: netstat -rn
                  Routing tables
                  
                  Internet:
                  Destination        Gateway            Flags     Netif Expire
                  default            103.85.36.1        UGS         re0
                  1.1.1.1            103.85.36.1        UGHS        re0
                  10.0.8.0/24        link#7             U        ovpns2
                  10.0.8.1           link#4             UHS         lo0
                  10.10.10.1         link#4             UH          lo0
                  103.85.36.0/22     link#1             U           re0
                  103.85.36.1        link#1             UHS         re0
                  103.85.37.84       link#4             UHS         lo0
                  127.0.0.1          link#4             UH          lo0
                  192.168.10.0/24    link#2             U           re1
                  192.168.10.1       link#4             UHS         lo0
                  
                  Internet6:
                  Destination                       Gateway                       Flags     Netif Expire
                  default                           fe80::9a49:25ff:fe0c:6d8b%re0 UGS         re0
                  ::1                               link#4                        UHS         lo0
                  2001:4860:4860::8888              fe80::9a49:25ff:fe0c:6d8b%re0 UGHS        re0
                  2402:7940:f000:200::111           link#4                        UHS         lo0
                  2402:7940:f021:2900::/56          link#2                        U           re1
                  2402:7940:f021:2900:2e0:4cff:fe68:1bb3 link#4                   UHS         lo0
                  fe80::%re0/64                     link#1                        U           re0
                  fe80::2e0:4cff:fe68:1bb2%lo0      link#4                        UHS         lo0
                  fe80::%re1/64                     link#2                        U           re1
                  fe80::1:1%lo0                     link#4                        UHS         lo0
                  fe80::2e0:4cff:fe68:1bb3%lo0      link#4                        UHS         lo0
                  fe80::%lo0/64                     link#4                        U           lo0
                  fe80::1%lo0                       link#4                        UHS         lo0
                  fe80::%ovpns2/64                  link#7                        U        ovpns2
                  fe80::2e0:4cff:fe68:1bb2%lo0      link#4                        UHS         lo0
                  [2.7.0-RELEASE][admin@pfSense.localdomain]/root:
                  

                  @stephenw10 said in IPv6 Issues since upgrading:

                  Can you ping out from pfSense's LAN side IPv6 address?
                  Not sure what you mean here. If I log into pfSense via SSH I get replies with "ping -6 google.com"

                  However I cannot ping from any LAN Clients that do have IPv6 addresses. Any ideas appreciated.

                  PfSense running on Qotom mini PC
                  CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
                  UniFi AC-Lite access point

                  1 Reply Last reply Reply Quote 0
                  • stephenw10S Offline
                    stephenw10 Netgate Administrator
                    last edited by

                    But can you ping out from pfSense using the LAN address as source?
                    It could be whatever is upstream from pfSense does not have route for that /56 it's passing.

                    gregeehG 1 Reply Last reply Reply Quote 0
                    • gregeehG Offline
                      gregeeh @stephenw10
                      last edited by

                      @stephenw10 said in IPv6 Issues since upgrading:

                      But can you ping out from pfSense using the LAN address as source?

                      I'm sorry @stephenw10 but I still don't understand. Can you give me an example?

                      PfSense running on Qotom mini PC
                      CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
                      UniFi AC-Lite access point

                      1 Reply Last reply Reply Quote 0
                      • stephenw10S Offline
                        stephenw10 Netgate Administrator
                        last edited by

                        Like this:
                        Screenshot from 2023-08-01 23-30-57.png

                        gregeehG 1 Reply Last reply Reply Quote 0
                        • gregeehG Offline
                          gregeeh @stephenw10
                          last edited by gregeeh

                          @stephenw10 - Yep, here are the results.

                          PING google.com (142.250.66.238) from 192.168.10.1: 56 data bytes
                          64 bytes from 142.250.66.238: icmp_seq=0 ttl=121 time=6.247 ms
                          64 bytes from 142.250.66.238: icmp_seq=1 ttl=121 time=6.232 ms
                          64 bytes from 142.250.66.238: icmp_seq=2 ttl=121 time=6.627 ms
                          
                          --- google.com ping statistics ---
                          3 packets transmitted, 3 packets received, 0.0% packet loss
                          round-trip min/avg/max/stddev = 6.232/6.369/6.627/0.183 ms
                          

                          So I need to find the issue with the LAN clients not being able to ping IPv6 addresses.

                          EDIT: And the IPv6:

                          PING6(56=40+8+8 bytes) 2402:7940:f021:2900:2e0:4cff:fe68:1bb3 --> 2404:6800:4006:810::200e
                          16 bytes from 2404:6800:4006:810::200e, icmp_seq=0 hlim=121 time=6.173 ms
                          16 bytes from 2404:6800:4006:810::200e, icmp_seq=1 hlim=121 time=6.171 ms
                          16 bytes from 2404:6800:4006:810::200e, icmp_seq=2 hlim=121 time=6.723 ms
                          
                          --- google.com ping6 statistics ---
                          3 packets transmitted, 3 packets received, 0.0% packet loss
                          round-trip min/avg/max/std-dev = 6.171/6.356/6.723/0.260 ms
                          

                          PfSense running on Qotom mini PC
                          CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
                          UniFi AC-Lite access point

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                          • stephenw10S Offline
                            stephenw10 Netgate Administrator
                            last edited by

                            Ok so pings from the /56 delegated subnet work so upstream routing is fine. And pfSense knows that subnet is on the LAN. So as long as your have firewall rules to allow it clients should be able to ping out from an address in that subnet.

                            Check the firewall logs for blocked traffic.

                            Check the clients have a default v6 route via the pfSense LAN.

                            gregeehG 1 Reply Last reply Reply Quote 0
                            • gregeehG Offline
                              gregeeh @stephenw10
                              last edited by

                              @stephenw10 said in IPv6 Issues since upgrading:

                              Check the firewall logs for blocked traffic.

                              Check the clients have a default v6 route via the pfSense LAN.

                              Thank you @stephenw10 for your assistance. I will do some checking.

                              Can you explain how the clients get a v6 route? I have DHCPv6 Server disabled as that is what my ISP told me.

                              Once again, I appreciate your time.

                              PfSense running on Qotom mini PC
                              CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
                              UniFi AC-Lite access point

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                              • stephenw10S Offline
                                stephenw10 Netgate Administrator
                                last edited by

                                They should see it via router advertisements. If they are getting an IP in that subnet then SLAAC must be working so I'd expect them to get a gateway/route.

                                Not sure why your ISP told you to disable the dhcpv6 server though. You should be able to use both.

                                gregeehG 1 Reply Last reply Reply Quote 0
                                • gregeehG Offline
                                  gregeeh @stephenw10
                                  last edited by

                                  @stephenw10 said in IPv6 Issues since upgrading:

                                  If they are getting an IP in that subnet then SLAAC must be working so I'd expect them to get a gateway/route.

                                  This is a typical Windows PC that can't connect to v6 addresses.

                                  Wireless LAN adapter WiFi:
                                  
                                     Connection-specific DNS Suffix  . : localdomain
                                     Description . . . . . . . . . . . : Qualcomm Atheros QCA61x4A Wireless Network Adapter
                                     Physical Address. . . . . . . . . : D8-C4-97-8B-1F-56
                                     DHCP Enabled. . . . . . . . . . . : Yes
                                     Autoconfiguration Enabled . . . . : Yes
                                     Link-local IPv6 Address . . . . . : fe80::f2e3:d343:2681:34fe%9(Preferred)
                                     IPv4 Address. . . . . . . . . . . : 192.168.10.182(Preferred)
                                     Subnet Mask . . . . . . . . . . . : 255.255.255.0
                                     Lease Obtained. . . . . . . . . . : Wednesday, 2 August 2023 9:00:55 AM
                                     Lease Expires . . . . . . . . . . : Wednesday, 2 August 2023 11:00:49 AM
                                     Default Gateway . . . . . . . . . : fe80::2e0:4cff:fe68:1bb3%9
                                                                         192.168.10.1
                                     DHCP Server . . . . . . . . . . . : 192.168.10.1
                                     DHCPv6 IAID . . . . . . . . . . . : 114869399
                                     DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-23-DD-48-A7-D8-C4-97-8B-1F-56
                                     DNS Servers . . . . . . . . . . . : 192.168.10.1
                                     NetBIOS over Tcpip. . . . . . . . : Enabled
                                     Connection-specific DNS Suffix Search List :
                                  

                                  PfSense running on Qotom mini PC
                                  CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
                                  UniFi AC-Lite access point

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                                  • stephenw10S Offline
                                    stephenw10 Netgate Administrator
                                    last edited by

                                    It doesn't have a routable IPv6 address from the /56 subnet so.... it can't work.

                                    Did you also disable router advertisements on the LAN? That needs to be enabled.

                                    gregeehG 1 Reply Last reply Reply Quote 0
                                    • gregeehG Offline
                                      gregeeh @stephenw10
                                      last edited by

                                      @stephenw10 said in IPv6 Issues since upgrading:

                                      Did you also disable router advertisements on the LAN? That needs to be enabled.

                                      Is this what you mean?

                                      alt text

                                      PfSense running on Qotom mini PC
                                      CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
                                      UniFi AC-Lite access point

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                                      • stephenw10S Offline
                                        stephenw10 Netgate Administrator
                                        last edited by

                                        Yes. Try enabling the dhcpv6 server again though.

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                                        • gregeehG Offline
                                          gregeeh @stephenw10
                                          last edited by

                                          @stephenw10 - That has done the trick, many thanks. I never thought about enabling the DHCPv6 Server as my ISP, and others I've seen, said to keep it disabled. Here's an extract from what my ISP says:

                                          22. Go to Services, DHCPv6 Server & RA
                                          
                                          23. Make sure on the first page (DHCPv6 server) the box is unticked – you do not want to enable the DHCPv6 server on the LAN.
                                          
                                          24. Select the router advertisements tab on that page.
                                          
                                          25. Change router mode to: Assisted – RA Flags [managed, other stateful], Prefix Flags...
                                          
                                          26. Router priory set to Normal (it should already be preset to that – if not, change it to normal).
                                          
                                          27. Leave everything else on that page blank.
                                          

                                          PfSense running on Qotom mini PC
                                          CPU N3150, 2 GB memory, 32 GB SSD & 2 Realtek Gb Ethernet ports.
                                          UniFi AC-Lite access point

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                                          • P Offline
                                            poppadum @poppadum
                                            last edited by poppadum

                                            @poppadum said in IPv6 Issues since upgrading:

                                            The gateway IPv6 address shown doesn't seem to be valid for interface pppoe0:

                                            I'm not sure where it's getting that gateway address from - it's set to dynamic in the web interface.

                                            After a bit more investigation I've discovered that the default gateway address pfSense is picking up is actually at my ISP's end and is correct.

                                            My problem seems to be exactly the same as @jordanp123 has: pfSense is not adding a default ipv6 route:

                                            [2.7.0-RELEASE][admin@pfSense]/root: route -6 get default
                                            route: route has not been found
                                            

                                            My ISP uses PPPoE so I can temporarily fix it with route -6 add default -interface pppoe0
                                            But if my PPP connection drops it loses the default route again.

                                            Looking at the output of /etc/rc.newwanipv6 when I rebooted pfSense I'm seeing a few Gateway, NONE AVAILABLE errors:

                                            Aug  2 10:12:39 pfSense php-fpm[368]: /rc.newwanipv6: rc.newwanipv6: Info: starting on pppoe0.
                                            Aug  2 10:12:39 pfSense php-fpm[368]: /rc.newwanipv6: rc.newwanipv6: on (IP address: 2001:8b0:1111:1111:0:ffff:51bb:1aef) (interface: wan) (real interface: pppoe0).
                                            Aug  2 10:12:39 pfSense php-fpm[368]: /rc.newwanipv6: Removing static route for monitor 2001:8b0:1111:1111:0:ffff:51bb:1aef and adding a new route through dynamic
                                            Aug  2 10:12:39 pfSense check_reload_status[406]: rc.newwanipv6 starting pppoe0
                                            Aug  2 10:12:40 pfSense php-fpm[86171]: /rc.newwanipv6: rc.newwanipv6: Info: starting on pppoe0.
                                            Aug  2 10:12:40 pfSense php-fpm[86171]: /rc.newwanipv6: rc.newwanipv6: on (IP address: 2001:8b0:1111:1111:0:ffff:51bb:1aef) (interface: wan) (real interface: pppoe0).
                                            Aug  2 10:12:40 pfSense php-fpm[86171]: /rc.newwanipv6: Removing static route for monitor 2001:8b0:1111:1111:0:ffff:51bb:1aef and adding a new route through fe80::203:97ff:feba:900%pppoe0
                                            Aug  2 10:12:41 pfSense php-fpm[86171]: /rc.newwanipv6: dpinger: status socket /var/run/dpinger_WAN_DHCP6~c91b75a6~2001:8b0:1111:1111:0:ffff:51bb:1aef.sock not found
                                            Aug  2 10:12:41 pfSense php-fpm[86171]: /rc.newwanipv6: dpinger: status socket /var/run/dpinger_WAN_PPPOE~81.187.xxx.xxx~81.187.81.187.sock not found
                                            Aug  2 10:12:41 pfSense php-fpm[86171]: /rc.newwanipv6: Gateway, none 'available' for inet, use the first one configured. 'WAN_PPPOE'
                                            Aug  2 10:12:41 pfSense php-fpm[86171]: /rc.newwanipv6: Gateway, NONE AVAILABLE
                                            Aug  2 10:12:41 pfSense php-fpm[368]: /rc.newwanipv6: The command '/usr/local/bin/dpinger -S -r 0 -i WAN_DHCP6 -B 2001:8b0:1111:1111:0:ffff:51bb:1aef -p /var/run/dpinger_WAN_DHCP6~c91b75a6~2001:8b0:1111:1111:0:ffff:51bb:1aef.pid -u /var/run/dpinger_WAN_DHCP6~c91b75a6~2001:8b0:1111:1111:0:ffff:51bb:1aef.sock -C "/etc/rc.gateway_alarm" -d 1 -s 500 -l 2000 -t 60000 -A 1000 -D 500 -L 20  2001:8b0:1111:1111:0:ffff:51bb:1aef >/dev/null' returned exit code '1', the output was ''
                                            Aug  2 10:12:41 pfSense php-fpm[368]: /rc.newwanipv6: Error starting gateway monitor for WAN_DHCP6
                                            Aug  2 10:12:42 pfSense php-fpm[368]: /rc.newwanipv6: Gateway, NONE AVAILABLE
                                            Aug  2 10:12:42 pfSense php-fpm[368]: /rc.newwanipv6: Gateway, NONE AVAILABLE
                                            Aug  2 10:12:43 pfSense php-fpm[86171]: /rc.newwanipv6: rc.newwanipv6: Info: starting on pppoe0.
                                            Aug  2 10:12:43 pfSense php-fpm[86171]: /rc.newwanipv6: rc.newwanipv6: on (IP address: 2001:8b0:1111:1111:0:ffff:51bb:1aef) (interface: wan) (real interface: pppoe0).
                                            Aug  2 10:12:43 pfSense php-fpm[86171]: /rc.newwanipv6: Removing static route for monitor 2001:8b0:1111:1111:0:ffff:51bb:1aef and adding a new route through fe80::203:97ff:feba:900%pppoe0
                                            Aug  2 10:12:45 pfSense php-fpm[86171]: /rc.newwanipv6: Gateway, NONE AVAILABLE
                                            Aug  2 10:12:45 pfSense php-fpm[86171]: /rc.newwanipv6: Gateway, NONE AVAILABLE
                                            

                                            Are these likely to be relevant?

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