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    Problems with pfSense IPV6 DNS function (does it exist!?)

    Scheduled Pinned Locked Moved CE 2.7.0 Development Snapshots (Retired)
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    • L
      louis2 @Gertjan
      last edited by

      @gertjan

      I am still confused. I did not have a look at the logging yet,

      however:

      • nslookup example.com dns.google AND
      • nslookup example.com dns.google. AND
      • nslookup example.com 2001:4860:4860::8844 AND
      • nslookup example.com 8.8.8.8

      Are all providing the same correct answer. And all provide the correct server name dns.google (without an domain added).
      So that does not match your example .. / screen captures ....

      The second column in the DNS entry screen say
      Hostname
      Enter the DNS Server Hostname for TLS Verification in the DNS Resolver (optional)

      So that suggests a name not an address ....
      Is 8.8.8.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.6.8.4.0.6.8.4.1.0.0.2.ip6.arpa. a name or an address !? I would say an address

      The documentations says
      The FQDN of the DNS server, used to validate DNS server certificates when using DNS over TLS (DNS Resolver Configuration).

      Further on:
      https://www.nslookup.io/domains/dns.google/dns-records/ptr/

      2001:4860:4860::8888 => 8.8.8.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.6.8.4.0.6.8.4.1.0.0.2.ip6.arpa. 86400 PTR dns.google
      dns.google does not have any PTR records.
      dns.google. does not have any PTR records.
      dns.google.com does not have any PTR records.

      So I will do some debugging, but to say that the page or documentation is helpful ..... hardly. One or more examples would help.

      Then we have this setting
      3c297336-077e-4efd-bd11-165796a89063-image.png

      Showing IPV4 behavoir .... I assume that behavoir is also used for IPV6 ....

      1 Reply Last reply Reply Quote 0
      • C
        cursixx @Gertjan
        last edited by

        @gertjan Here is the debug log. Let me know if you think I missed something (sorry for the picture. spam filter would not let me post it as code)

        cb2e2f26-08b3-48ce-a8c4-aa74d18a3c65-image.png

        johnpozJ 1 Reply Last reply Reply Quote 0
        • johnpozJ
          johnpoz LAYER 8 Global Moderator @cursixx
          last edited by johnpoz

          @louis2 said in Problems with pfSense IPV6 DNS function (does it exist!?):

          used to validate DNS server certificates

          this is big take away.. that fqdn is used on the cert to validate your talking to the right dot server..

          So for example if I do a dot query to 1.1.1.1 and tell it to validate everything then using something other than the CN or what is in the SAN of the cert would fail.. A normal dot query should be validating this..

          You can get all the info of CN and SANs that are in the cert with some use of openssl, notice the output below for the CN and SANs in that cert being used at 1.1.1.1 on port 853.

          But from a kdig asking for validation you can see it fails if I use a fqdn that is not CN or SAN.

          root@NewUC:/home/user# kdig -d @1.1.1.1 www.google.com +tls-ca
          ;; DEBUG: Querying for owner(www.google.com.), class(1), type(1), server(1.1.1.1), port(853), protocol(TCP)
          ;; DEBUG: TLS, imported 124 system certificates
          ;; DEBUG: TLS, received certificate hierarchy:
          ;; DEBUG:  #1, C=US,ST=California,L=San Francisco,O=Cloudflare\, Inc.,CN=cloudflare-dns.com
          ;; DEBUG:      SHA-256 PIN: MnLdGiqUGYhtyinlrGTC4FZdDyDXv4NOWFGnXW3ur14=
          ;; DEBUG:  #2, C=US,O=DigiCert Inc,CN=DigiCert TLS Hybrid ECC SHA384 2020 CA1
          ;; DEBUG:      SHA-256 PIN: e0IRz5Tio3GA1Xs4fUVWmH1xHDiH2dMbVtCBSkOIdqM=
          ;; DEBUG: TLS, skipping certificate PIN check
          ;; DEBUG: TLS, The certificate is trusted. 
          ;; TLS session (TLS1.3)-(ECDHE-X25519)-(ECDSA-SECP256R1-SHA256)-(AES-256-GCM)
          ;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 30091
          ;; Flags: qr rd ra; QUERY: 1; ANSWER: 1; AUTHORITY: 0; ADDITIONAL: 1
          
          ;; EDNS PSEUDOSECTION:
          ;; Version: 0; flags: ; UDP size: 1232 B; ext-rcode: NOERROR
          ;; PADDING: 405 B
          
          ;; QUESTION SECTION:
          ;; www.google.com.              IN      A
          
          ;; ANSWER SECTION:
          www.google.com.         128     IN      A       142.250.191.132
          
          ;; Received 468 B
          ;; Time 2023-01-09 13:12:01 CST
          ;; From 1.1.1.1@853(TCP) in 61.0 ms
          root@NewUC:/home/user# 
          

          But if I tell it wrong host name..

          ;; From 1.1.1.1@853(TCP) in 61.0 ms
          root@NewUC:/home/user# kdig -d @1.1.1.1 www.google.com +tls-ca +tls-host=badname
          ;; DEBUG: Querying for owner(www.google.com.), class(1), type(1), server(1.1.1.1), port(853), protocol(TCP)
          ;; DEBUG: TLS, imported 124 system certificates
          ;; DEBUG: TLS, received certificate hierarchy:
          ;; DEBUG:  #1, C=US,ST=California,L=San Francisco,O=Cloudflare\, Inc.,CN=cloudflare-dns.com
          ;; DEBUG:      SHA-256 PIN: MnLdGiqUGYhtyinlrGTC4FZdDyDXv4NOWFGnXW3ur14=
          ;; DEBUG:  #2, C=US,O=DigiCert Inc,CN=DigiCert TLS Hybrid ECC SHA384 2020 CA1
          ;; DEBUG:      SHA-256 PIN: e0IRz5Tio3GA1Xs4fUVWmH1xHDiH2dMbVtCBSkOIdqM=
          ;; DEBUG: TLS, skipping certificate PIN check
          ;; DEBUG: TLS, The certificate is NOT trusted. The name in the certificate does not match the expected. 
          ;; WARNING: TLS, handshake failed (Error in the certificate.)
          ;; ERROR: failed to query server 1.1.1.1@853(TCP)
          root@NewUC:/home/user#
          

          if I use correct hostname, see the below openssl output to what all the valid SANs are in that cert

          root@NewUC:/home/user# kdig -d @1.1.1.1 www.google.com +tls-ca +tls-host=one.one.one.one
          ;; DEBUG: Querying for owner(www.google.com.), class(1), type(1), server(1.1.1.1), port(853), protocol(TCP)
          ;; DEBUG: TLS, imported 124 system certificates
          ;; DEBUG: TLS, received certificate hierarchy:
          ;; DEBUG:  #1, C=US,ST=California,L=San Francisco,O=Cloudflare\, Inc.,CN=cloudflare-dns.com
          ;; DEBUG:      SHA-256 PIN: MnLdGiqUGYhtyinlrGTC4FZdDyDXv4NOWFGnXW3ur14=
          ;; DEBUG:  #2, C=US,O=DigiCert Inc,CN=DigiCert TLS Hybrid ECC SHA384 2020 CA1
          ;; DEBUG:      SHA-256 PIN: e0IRz5Tio3GA1Xs4fUVWmH1xHDiH2dMbVtCBSkOIdqM=
          ;; DEBUG: TLS, skipping certificate PIN check
          ;; DEBUG: TLS, The certificate is trusted. 
          ;; TLS session (TLS1.3)-(ECDHE-X25519)-(ECDSA-SECP256R1-SHA256)-(AES-256-GCM)
          ;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 62622
          ;; Flags: qr rd ra; QUERY: 1; ANSWER: 1; AUTHORITY: 0; ADDITIONAL: 1
          
          ;; EDNS PSEUDOSECTION:
          ;; Version: 0; flags: ; UDP size: 1232 B; ext-rcode: NOERROR
          ;; PADDING: 405 B
          
          ;; QUESTION SECTION:
          ;; www.google.com.              IN      A
          
          ;; ANSWER SECTION:
          www.google.com.         289     IN      A       142.250.190.4
          
          ;; Received 468 B
          ;; Time 2023-01-09 13:14:10 CST
          ;; From 1.1.1.1@853(TCP) in 63.2 ms
          root@NewUC:/home/user# 
          

          As to your log - seems it pretty clear to why its refusing you, that "::/128 refused" where that is coming from not sure.. But that would explain why its refusing you.

          root@NewUC:/home/user# openssl s_client -connect 1.1.1.1:853 </dev/null 2>/dev/null | openssl x509 -noout -text
          Certificate:
              Data:
                  Version: 3 (0x2)
                  Serial Number:
                      0d:1c:7a:f2:8e:5f:27:17:db:b2:7f:41:08:20:bd:f7
                  Signature Algorithm: ecdsa-with-SHA384
                  Issuer: C = US, O = DigiCert Inc, CN = DigiCert TLS Hybrid ECC SHA384 2020 CA1
                  Validity
                      Not Before: Sep 13 00:00:00 2022 GMT
                      Not After : Sep 13 23:59:59 2023 GMT
                  Subject: C = US, ST = California, L = San Francisco, O = "Cloudflare, Inc.", CN = cloudflare-dns.com
                  Subject Public Key Info:
                      Public Key Algorithm: id-ecPublicKey
                          Public-Key: (256 bit)
                          pub:
                              04:fc:3e:51:ef:74:1d:c6:da:78:ba:ae:a5:8a:4a:
                              dd:d9:0b:e6:e2:5b:57:31:57:de:d3:bf:b6:d9:8a:
                              3b:4f:d2:54:54:88:cf:bd:2e:65:e7:66:eb:c5:df:
                              d0:31:54:52:a7:2c:ee:12:86:a3:9a:66:c1:ea:06:
                              79:03:ba:1b:f0
                          ASN1 OID: prime256v1
                          NIST CURVE: P-256
                  X509v3 extensions:
                      X509v3 Authority Key Identifier: 
                          0A:BC:08:29:17:8C:A5:39:6D:7A:0E:CE:33:C7:2E:B3:ED:FB:C3:7A
                      X509v3 Subject Key Identifier: 
                          D2:63:BA:94:D6:54:7F:4C:85:14:08:3A:1C:85:56:29:EF:59:8F:CC
                      X509v3 Subject Alternative Name: 
                          DNS:cloudflare-dns.com, DNS:*.cloudflare-dns.com, DNS:one.one.one.one, IP Address:1.0.0.1, IP Address:1.1.1.1, IP Address:162.159.36.1, IP Address:162.159.46.1, IP Address:2606:4700:4700:0:0:0:0:1001, IP Address:2606:4700:4700:0:0:0:0:1111, IP Address:2606:4700:4700:0:0:0:0:64, IP Address:2606:4700:4700:0:0:0:0:6400
                      X509v3 Key Usage: critical
                          Digital Signature
                      X509v3 Extended Key Usage: 
                          TLS Web Server Authentication, TLS Web Client Authentication
                      X509v3 CRL Distribution Points: 
                          Full Name:
                            URI:http://crl3.digicert.com/DigiCertTLSHybridECCSHA3842020CA1-1.crl
                          Full Name:
                            URI:http://crl4.digicert.com/DigiCertTLSHybridECCSHA3842020CA1-1.crl
                      X509v3 Certificate Policies: 
                          Policy: 2.23.140.1.2.2
                            CPS: http://www.digicert.com/CPS
                      Authority Information Access: 
                          OCSP - URI:http://ocsp.digicert.com
                          CA Issuers - URI:http://cacerts.digicert.com/DigiCertTLSHybridECCSHA3842020CA1-1.crt
                      X509v3 Basic Constraints: 
                          CA:FALSE
                      CT Precertificate SCTs: 
                          Signed Certificate Timestamp:
                              Version   : v1 (0x0)
                              Log ID    : E8:3E:D0:DA:3E:F5:06:35:32:E7:57:28:BC:89:6B:C9:
                                          03:D3:CB:D1:11:6B:EC:EB:69:E1:77:7D:6D:06:BD:6E
                              Timestamp : Sep 13 22:48:42.079 2022 GMT
                              Extensions: none
                              Signature : ecdsa-with-SHA256
                                          30:44:02:20:13:E1:7D:A3:DD:99:5A:FF:0B:9F:41:A7:
                                          37:EA:F3:4D:82:23:03:09:43:DD:AC:2D:C8:9C:C8:4E:
                                          3C:34:32:F7:02:20:35:1A:CE:22:F9:06:48:3D:8D:0D:
                                          C9:EB:9D:6C:92:C2:03:BA:59:D6:94:EE:8F:71:38:E8:
                                          26:00:12:76:48:0F
                          Signed Certificate Timestamp:
                              Version   : v1 (0x0)
                              Log ID    : 35:CF:19:1B:BF:B1:6C:57:BF:0F:AD:4C:6D:42:CB:BB:
                                          B6:27:20:26:51:EA:3F:E1:2A:EF:A8:03:C3:3B:D6:4C
                              Timestamp : Sep 13 22:48:42.151 2022 GMT
                              Extensions: none
                              Signature : ecdsa-with-SHA256
                                          30:46:02:21:00:A2:B6:45:5D:DE:32:F8:03:3C:9C:BD:
                                          5F:49:1B:8B:79:1B:FB:39:68:73:53:43:83:4E:77:8A:
                                          37:D2:56:76:E2:02:21:00:84:92:F2:CA:5E:AB:16:F4:
                                          50:EC:8D:95:F0:84:36:B0:A8:99:B8:75:05:9E:A0:4A:
                                          F7:C2:16:F6:8E:23:1C:4F
                          Signed Certificate Timestamp:
                              Version   : v1 (0x0)
                              Log ID    : B3:73:77:07:E1:84:50:F8:63:86:D6:05:A9:DC:11:09:
                                          4A:79:2D:B1:67:0C:0B:87:DC:F0:03:0E:79:36:A5:9A
                              Timestamp : Sep 13 22:48:42.231 2022 GMT
                              Extensions: none
                              Signature : ecdsa-with-SHA256
                                          30:45:02:21:00:9A:01:8C:AF:2F:41:72:8B:57:0B:1C:
                                          1C:07:90:22:B1:C3:D7:FE:80:BB:FB:D2:B5:AA:CE:60:
                                          5F:0F:62:0E:DF:02:20:0A:8C:4B:CE:DB:26:DF:B8:5E:
                                          67:D6:9E:68:7C:CE:C4:D4:15:9A:53:3B:80:1F:07:F6:
                                          6B:80:6B:07:18:86:A0
              Signature Algorithm: ecdsa-with-SHA384
              Signature Value:
                  30:65:02:30:19:d7:9a:79:6e:69:cc:19:6f:dd:c3:d0:36:c8:
                  54:d0:4e:f4:6f:1d:46:c0:ca:2f:fb:22:19:95:f8:70:75:0b:
                  59:d9:ad:16:31:6e:1a:26:1b:16:df:71:0d:55:cd:4a:02:31:
                  00:ea:dc:2e:09:98:fe:b1:fb:07:f5:31:5f:b6:7c:1a:be:38:
                  d9:c5:39:9a:6a:0b:9d:8f:54:67:13:4b:c1:12:86:26:2a:11:
                  6d:98:d3:91:1d:02:eb:e1:77:76:71:37:8e
          root@NewUC:/home/user# 
          

          If you don't want to look through all that, the important info from the cert is this

          X509v3 Subject Alternative Name:
          DNS:cloudflare-dns.com, DNS:*.cloudflare-dns.com, DNS:one.one.one.one, IP Address:1.0.0.1, IP Address:1.1.1.1, IP Address:162.159.36.1, IP Address:162.159.46.1, IP Address:2606:4700:4700:0:0:0:0:1001, IP Address:2606:4700:4700:0:0:0:0:1111, IP Address:2606:4700:4700:0:0:0:0:64, IP Address:2606:4700:4700:0:0:0:0:6400

          big fan of dig, and use it pretty much everyday - but kdig is much better with working with dot and or doh. And with anything cert related use of openssl is your go to tool.

          An intelligent man is sometimes forced to be drunk to spend time with his fools
          If you get confused: Listen to the Music Play
          Please don't Chat/PM me for help, unless mod related
          SG-4860 24.11 | Lab VMs 2.8, 24.11

          C 1 Reply Last reply Reply Quote 0
          • C
            cursixx @johnpoz
            last edited by

            I did a factory reset of my config and set my WAN and LAN interfaces (dev 2.7 1/9). Never even logged in and I'm still getting query refused with ipv6. I just wanted to rule out any of my config changes as the issue.

            Then I loaded a clean install of stable 2.6 and it seems to be working as expected

            1 Reply Last reply Reply Quote 1
            • C cursixx referenced this topic on
            • Bob.DigB
              Bob.Dig LAYER 8 @marcosm
              last edited by

              @marcosm I can confirm this bug for 23.01.r.20230202.1645 too. At least for ULAs.

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              • jimpJ
                jimp Rebel Alliance Developer Netgate
                last edited by

                I still can't reproduce this here. Fresh install, DHCPv6 WAN / Track6 LAN, it boots up and has the prefix for LAN allowed in Unbound, and a client on LAN gets an address and can query it properly.

                If that doesn't work I suggest first checking your WAN to make sure you have the correct settings there for DHCPv6 (especially the delegation size), and check to see what is present on the LAN interface(s) and in /var/unbound/access_lists.conf.

                There could be some kind of timing issue where the address gets added to LAN but unbound doesn't reload after that, but I'm not aware of anything that would have changed in that scenario specifically.

                Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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                T 1 Reply Last reply Reply Quote 0
                • W
                  watkins13
                  last edited by watkins13

                  I seem to be running into this REFUSED query response issue as well—or at the least a very similar issue—on the current pfSense Plus 23.01-RC build running on my Netgate 6100.

                  Refused IPv6 query output:

                  Arashi ~ % dig @2600:1700:2320:5fcf:92ec:77ff:fe21:3f06 dns.google. AAAA
                  
                  ; <<>> DiG 9.10.6 <<>> @2600:1700:2320:5fcf:92ec:77ff:fe21:3f06 dns.google. AAAA
                  ; (1 server found)
                  ;; global options: +cmd
                  ;; Got answer:
                  ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 46011
                  ;; flags: qr rd ad; QUERY: 0, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
                  ;; WARNING: recursion requested but not available
                  
                  ;; Query time: 57 msec
                  ;; SERVER: 2600:1700:2320:5fcf:92ec:77ff:fe21:3f06#53(2600:1700:2320:5fcf:92ec:77ff:fe21:3f06)
                  ;; WHEN: Mon Feb 13 13:26:40 PST 2023
                  ;; MSG SIZE  rcvd: 12
                  
                  

                  Working IPv4 query output:

                  Arashi ~ % dig @10.13.1.1 dns.google. AAAA
                  
                  ; <<>> DiG 9.10.6 <<>> @10.13.1.1 dns.google. AAAA
                  ; (1 server found)
                  ;; global options: +cmd
                  ;; Got answer:
                  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46994
                  ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
                  
                  ;; OPT PSEUDOSECTION:
                  ; EDNS: version: 0, flags:; udp: 1432
                  ;; QUESTION SECTION:
                  ;dns.google.			IN	AAAA
                  
                  ;; ANSWER SECTION:
                  dns.google.		900	IN	AAAA	2001:4860:4860::8844
                  dns.google.		900	IN	AAAA	2001:4860:4860::8888
                  
                  ;; Query time: 484 msec
                  ;; SERVER: 10.13.1.1#53(10.13.1.1)
                  ;; WHEN: Mon Feb 13 13:18:02 PST 2023
                  ;; MSG SIZE  rcvd: 95
                  
                  

                  From what I can tell so far, the issue seems to be that expected access-control lines for the LAN interface are not auto-added the lines for the IPv6 parts of the LAN interface and only generating access-control entries for the IPv4 LAN network.

                  IPv4 queries function as expected on the LAN, and IPv6 DNS queries on the LAN interface are answered with a REFUSED status. I checked to see confirm that IPv6 DNS packets were reaching the router past the firewall rules. I further confirmed that by adding in an explicit firewall rule to allow it at the top of the LAN list to confirm that again.

                  uname -v output:

                  FreeBSD 14.0-CURRENT #0 plus-RELENG_23_01-n256016-ee43ebe4124: Wed Feb  8 14:43:16 UTC 2023     root@freebsd:/var/jenkins/workspace/pfSense-Plus-snapshots-23_01-main/obj/amd64/B5BT22YU/var/jenkins/workspace/pfSense-Plus-snapshots-23_01-main/sources/FreeBSD-src-plus-RELENG_23_01/amd64.amd64/sys/pfSense
                  

                  Current pfSense settings:

                  1. My WAN interface is using DHCP6 for IPv6, and my LAN is in the Track Interface type with WAN set as the IPv6 Interface to track.
                  2. The Disable Auto-added Access Control for the DNS Resolver is not checked.
                  3. The DNS Resolver (unbound) daemon is configured to listen on ALL interfaces.
                  4. DHCPv6 Server is enabled on the LAN with a delegated prefix length of 64, and the Router Advertisements mode is set to Assisted and Use same settings as DHCPv6 server is enabled/checked.
                  5. Looking at the generated /var/unbound/access_lists.conf file, it appears to have only generated IPv4 access-control lines. I do not see any lines for the LAN IPv6 delegated prefix.
                  [23.01-RC][root@pfSense-ng6100.home.arpa]/root: netstat -an | grep -E '\.53\b'
                  tcp4       0      0 *.53                   *.*                    LISTEN     
                  tcp6       0      0 *.53                   *.*                    LISTEN     
                  udp4       0      0 *.53                   *.*                    
                  udp6       0      0 *.53                   *.*                    
                  
                  [23.01-RC][root@pfSense-ng6100.home.arpa]/root: cat /var/unbound/access_lists.conf
                  access-control: 127.0.0.1/32 allow_snoop
                  access-control: ::1 allow_snoop
                  access-control: 10.13.1.0/24 allow
                  access-control: 127.0.0.0/8 allow
                  access-control: ::1/128 allow
                  
                  W 1 Reply Last reply Reply Quote 0
                  • W
                    watkins13 @watkins13
                    last edited by

                    @jimp

                    Is there a way I can enable/view logs for the generated auto-added access control items?

                    For now, I can workaround the missing IPv6 access-control lines for the DNS access lists by adding a custom Allow access list entry in the DNS Resolver settings to cover my current /64 LAN delegated prefix, but that workaround is brittle and would break if my delegated prefix changes at any point.

                    [23.01-RC][root@pfSense-ng6100.home.arpa]/root: cat /var/unbound/access_lists.conf
                    access-control: 127.0.0.1/32 allow_snoop
                    access-control: ::1 allow_snoop
                    access-control: 10.13.1.0/24 allow 
                    access-control: 127.0.0.0/8 allow 
                    access-control: ::1/128 allow 
                    #Custom IPv6 Allow Workaround
                    access-control: 2600:1700:2320:5fcf::/64 allow
                    

                    Working query with workaround:

                    Arashi ~ % dig @2600:1700:2320:5fcf:92ec:77ff:fe21:3f06 dns.google. AAAA
                    
                    ; <<>> DiG 9.10.6 <<>> @2600:1700:2320:5fcf:92ec:77ff:fe21:3f06 dns.google. AAAA
                    ; (1 server found)
                    ;; global options: +cmd
                    ;; Got answer:
                    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6924
                    ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
                    
                    ;; OPT PSEUDOSECTION:
                    ; EDNS: version: 0, flags:; udp: 1432
                    ;; QUESTION SECTION:
                    ;dns.google.			IN	AAAA
                    
                    ;; ANSWER SECTION:
                    dns.google.		900	IN	AAAA	2001:4860:4860::8844
                    dns.google.		900	IN	AAAA	2001:4860:4860::8888
                    
                    ;; Query time: 378 msec
                    ;; SERVER: 2600:1700:2320:5fcf:92ec:77ff:fe21:3f06#53(2600:1700:2320:5fcf:92ec:77ff:fe21:3f06)
                    ;; WHEN: Mon Feb 13 13:31:02 PST 2023
                    ;; MSG SIZE  rcvd: 95
                    
                    
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                    • Bob.DigB Bob.Dig referenced this topic on
                    • T
                      thebear @jimp
                      last edited by

                      @jimp I was triggered by your DHCP-PD size. My ISP provides a full /48 within PPPoE.

                      Then it should be configured as SIZE: 48?

                      More screenshots here https://forum.netgate.com/topic/177863/23-01-unable-to-answer-dns-queries-after-upgrade/26?_=1676570089641

                      @jimp said in [Problems with pfSense IPV6 DNS function (does it

                      If that doesn't work I suggest first checking your WAN to make sure you have the correct settings there for DHCPv6 (especially the delegation size)

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                      • jimpJ
                        jimp Rebel Alliance Developer Netgate
                        last edited by

                        I was finally able to find a box in my lab that hit this, so I was able to find out what was happening there. I reopened https://redmine.pfsense.org/issues/13851 for it.

                        I don't know how/why I wasn't hitting it on more things, but apparently most of the boxes I was checking for IPv6 had specific local bindings and were not set to "all" for the local network interface.

                        You can install the System Patches package and then create an entry for 46b159032fef8c78783aa1a749d2238cfed7ac0d to apply the fix.

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                        • T
                          thebear @jimp
                          last edited by

                          @jimp said in Problems with pfSense IPV6 DNS function (does it exist!?):

                          I was finally able to find a box in my lab that hit this, so I was able to find out what was happening there. I reopened https://redmine.pfsense.org/issues/13851 for it.

                          I don't know how/why I wasn't hitting it on more things, but apparently most of the boxes I was checking for IPv6 had specific local bindings and were not set to "all" for the local network interface.

                          You can install the System Patches package and then create an entry for 46b159032fef8c78783aa1a749d2238cfed7ac0d to apply the fix.

                          Thanks for the quick fix that looks way better!

                          9bc23827-008d-4186-b835-ceac83bf2e4f-image.png

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                          • Bob.DigB
                            Bob.Dig LAYER 8
                            last edited by Bob.Dig

                            @jimp said in Problems with pfSense IPV6 DNS function (does it exist!?):

                            46b159032fef8c78783aa1a749d2238cfed7ac0d

                            That fix worked for me too, took some seconds after the reboot that I did.

                            PS C:\Users\Bobby> nslookup reddit.com fd7b:97bf:48b9:100:192:168:100:1
                            Server:  pfSense.home.arpa
                            Address:  fd7b:97bf:48b9:100:192:168:100:1
                            
                            Non-authoritative answer:
                            Name:    reddit.com
                            Addresses:  2a04:4e42:200::396
                                      2a04:4e42::396
                                      2a04:4e42:600::396
                                      2a04:4e42:400::396
                                      151.101.193.140
                                      151.101.129.140
                                      151.101.65.140
                                      151.101.1.140
                            
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                              JimBob Indiana @jimp
                              last edited by

                              @jimp said in Problems with pfSense IPV6 DNS function (does it exist!?):

                              46b159032fef8c78783aa1a749d2238cfed7ac0d

                              If we're using 2.7 should we apply this patch?

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                              • jimpJ
                                jimp Rebel Alliance Developer Netgate @JimBob Indiana
                                last edited by

                                @jimbob-indiana said in Problems with pfSense IPV6 DNS function (does it exist!?):

                                @jimp said in Problems with pfSense IPV6 DNS function (does it exist!?):

                                46b159032fef8c78783aa1a749d2238cfed7ac0d

                                If we're using 2.7 should we apply this patch?

                                You can for now, once we have dev snapshots building again you can just upgrade to the latest snapshot and get the fix. Or you could gitsync, but that's more risky.

                                Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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                                  watkins13
                                  last edited by

                                  I applied the 46b159032fef8c78783aa1a749d2238cfed7ac0d commit patch and can add my own confirmation to the group that the generated DNS access lists are working as expected.

                                  I want to personally thank you @jimp for the work you put into this. :D I'm sure you've been busy with more higher-priority work related to the 23.01 release with how monumental of a change it really is. Changing both the PHP major version platform and language differences at the same time as re-basing work with skipping the entire FreeBSD 13.x series and going straight to the FreeBSD 14 code branch. That's no small feat to change both of those in a single release target, so bravo!

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