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    23.01 Unable to answer DNS queries after upgrade

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

      You see any errors in the DNS Resolver logs?

      Do you see those domains listed in Status > DNS Resolver?

      1 Reply Last reply Reply Quote 0
      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        Are you using anything special in your forwarding, such as DNS over TLS? Or are they just plain forwards?

        I have systems in my lab that are running 23.01 and hit 1.1.1.1 OK.

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

          No problems here.

          What is still a problem is Query refused if using an ULA for LAN.

          *** UnKnown can't find reddit.com: Query refused
          
          T 1 Reply Last reply Reply Quote 0
          • T
            thebear @Bob.Dig
            last edited by

            @bob-dig said in 23.01 Unable to answer DNS queries after upgrade:

            No problems here.

            What is still a problem is Query refused if using an ULA for LAN.

            *** UnKnown can't find reddit.com: Query refused
            

            Did you correct the ACL to allow these addresses to query DNS?

            Bob.DigB 2 Replies Last reply Reply Quote 0
            • Bob.DigB
              Bob.Dig LAYER 8 @thebear
              last edited by

              @thebear No, I changed nothing and the ULA is the only or lets say main IPv6 address on LAN.

              hn0.100: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
              	description: LAN
              	options=80000<LINKSTATE>
              	ether 00:15:5d:09:1e:19
              	inet6 fe80::215:5dff:fe09:1e19%hn0.100 prefixlen 64 scopeid 0x18
              	inet6 fd7b:97bf:48b9:100:192:168:100:1 prefixlen 64
              	inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
              	groups: vlan GroupNTP
              	vlan: 100 vlanproto: 802.1q vlanpcp: 0 parent interface: hn0
              	media: Ethernet autoselect (10Gbase-T <full-duplex>)
              	status: active
              	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
              
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              • M
                michmoor LAYER 8 Rebel Alliance
                last edited by

                Update for everyone.

                So far the fix for this was to re-do the DoT settings again. I went into DNS Resolver settings. Unchecked and then rechecked the following options.

                48d41ae0-cdd1-4025-973e-65acc7028bf9-image.png

                2hrs later the firewall is still answering queries so that seems to have fixed it.

                Firewall: NetGate,Palo Alto-VM,Juniper SRX
                Routing: Juniper, Arista, Cisco
                Switching: Juniper, Arista, Cisco
                Wireless: Unifi, Aruba IAP
                JNCIP,CCNP Enterprise

                1 Reply Last reply Reply Quote 2
                • Bob.DigB
                  Bob.Dig LAYER 8 @thebear
                  last edited by

                  @thebear For the record, manually creating an ACL solves the problem but it shouldn't be necessary to begin with.

                  T 1 Reply Last reply Reply Quote 0
                  • T
                    thebear @Bob.Dig
                    last edited by

                    @bob-dig why? I also needed to add a IPv6 ACL next to my IPv4 ACL I got with 22.05. Somehow the behavior has changed with 23.01.

                    Without the ACL's, where is the allow all option? If that not exists then the ACL is needed, right?

                    Bob.DigB 1 Reply Last reply Reply Quote 0
                    • Bob.DigB
                      Bob.Dig LAYER 8 @thebear
                      last edited by

                      @thebear said in 23.01 Unable to answer DNS queries after upgrade:

                      Without the ACL's, where is the allow all option?

                      Here it is:
                      Capture.PNG

                      T 1 Reply Last reply Reply Quote 0
                      • T
                        thebear @Bob.Dig
                        last edited by

                        @bob-dig Yeah I know, without the boxes checked pfSense should add the auto rules to unbound right?

                        And you confirming, my experiences, that is starts working after adding a manual IPv6 ACL.

                        Get my point there might be a bug involved in the default/auto ACL's for IPv6?

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

                          Here is the proof, without ACL's IPv4 remains functional and IPv6 stops.

                          status: REFUSED

                          ~ % dig @172.16.1.1 forum.netgate.com
                          
                          ; <<>> DiG 9.10.6 <<>> @172.16.1.1 forum.netgate.com
                          ; (1 server found)
                          ;; global options: +cmd
                          ;; Got answer:
                          ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57847
                          ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
                          
                          ;; OPT PSEUDOSECTION:
                          ; EDNS: version: 0, flags:; udp: 1432
                          ;; QUESTION SECTION:
                          ;forum.netgate.com.		IN	A
                          
                          ;; ANSWER SECTION:
                          forum.netgate.com.	1485	IN	A	208.123.73.199
                          
                          ;; Query time: 134 msec
                          ;; SERVER: 172.16.1.1#53(172.16.1.1)
                          ;; WHEN: Thu Feb 16 11:18:34 CET 2023
                          ;; MSG SIZE  rcvd: 62
                          
                          ~ % dig forum.netgate.com
                          
                          ; <<>> DiG 9.10.6 <<>> forum.netgate.com
                          ;; global options: +cmd
                          ;; Got answer:
                          ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 58561
                          ;; flags: qr rd ad; QUERY: 0, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
                          ;; WARNING: recursion requested but not available
                          
                          ;; Query time: 43 msec
                          ;; SERVER: 2a02:a469:<cut>#53(2a02:a469:<cut>)
                          ;; WHEN: Thu Feb 16 11:18:40 CET 2023
                          ;; MSG SIZE  rcvd: 12
                          

                          With the ACL added:

                           ~ % dig forum.netgate.com
                          
                          ; <<>> DiG 9.10.6 <<>> forum.netgate.com
                          ;; global options: +cmd
                          ;; Got answer:
                          ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44698
                          ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
                          
                          ;; OPT PSEUDOSECTION:
                          ; EDNS: version: 0, flags:; udp: 1432
                          ;; QUESTION SECTION:
                          ;forum.netgate.com.		IN	A
                          
                          ;; ANSWER SECTION:
                          forum.netgate.com.	1267	IN	A	208.123.73.199
                          
                          ;; Query time: 41 msec
                          ;; SERVER: 2a02:a469:435b:<cut>#53(2a02:a469:<cut>)
                          ;; WHEN: Thu Feb 16 11:22:13 CET 2023
                          ;; MSG SIZE  rcvd: 62
                          
                          
                          Bob.DigB 1 Reply Last reply Reply Quote 1
                          • Bob.DigB
                            Bob.Dig LAYER 8 @thebear
                            last edited by Bob.Dig

                            @thebear I thought it would only be a "bug" with ULA but yours even look like a GUA.

                            T 1 Reply Last reply Reply Quote 0
                            • T
                              thebear @Bob.Dig
                              last edited by thebear

                              @bob-dig said in 23.01 Unable to answer DNS queries after upgrade:

                              @thebear I thought it would only be a "bug" with ULA but yours even look like a GUA.

                              Indeed. Glad we came to the same conclusion.

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                              • stephenw10S
                                stephenw10 Netgate Administrator
                                last edited by

                                So to be clear you did not need those ACLs in 22.05? The auto added ACLs were passing v6 queries there?

                                Steve

                                T Bob.DigB 2 Replies Last reply Reply Quote 0
                                • T
                                  thebear @stephenw10
                                  last edited by

                                  @stephenw10 well as IT expert you change a lot every week, I think the short answer is yes. We did not need the extra v6 ACL to get the IPv6 DNS queries flowing.

                                  If you want I can BE boot to an older release tot verify, need to wait until later tonight.

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                                  • Bob.DigB
                                    Bob.Dig LAYER 8 @stephenw10
                                    last edited by

                                    @stephenw10 I even had dns problems in Windows, it would prefer the IPv6 that is given by pfSense and then it doesn't worked. Only because of the DNS problem in Windows I had to look closer.
                                    Later Windows switched to the IPv4 and DNS worked again "on its own". But I never encountered that problem before so my guess is, it must have worked before. And again, pfSense is giving this address... its interface address. Like seen here.

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                                    • stephenw10S
                                      stephenw10 Netgate Administrator
                                      last edited by

                                      Ok, I'll try to replicate it.

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                                      • jimpJ
                                        jimp Rebel Alliance Developer Netgate
                                        last edited by

                                        We've had a couple threads with similar reports but I've never been able to trigger it in my lab. It could be a timing issue where at the moment it collects the networks for the ACLs they aren't on the interface (yet?) but then they appear later, but there is no interface event when the delegated prefix gets added to the LAN(s) so Unbound doesn't restart after to pick up the change in ACLs.

                                        No amount of fiddling with options is likely to have any more impact than simply saving in Unbound without changing anything, triggering it to rewrite its config files.

                                        Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

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                                        Do not Chat/PM for help!

                                        Bob.DigB 1 Reply Last reply Reply Quote 0
                                        • Bob.DigB
                                          Bob.Dig LAYER 8 @jimp
                                          last edited by Bob.Dig

                                          @jimp Is this regarding to OP or "to the rest", because OPs problem is gone as far as I can see.
                                          For me I have ULAs so no delegated prefix at all and unbound still only allows IPv4. Also I am rebooting my pfSense on a daily bases via cron. Restarting Unbound doesn't solves this. If it helps you could move my thread in an active forum.

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                                          • jimpJ
                                            jimp Rebel Alliance Developer Netgate
                                            last edited by

                                            Adding a manual ACL works around the issue but it doesn't solve the root cause of the problem.

                                            By default the IPv4 and IPv6 networks of all local (non-WAN) interfaces used by Unbound should be allowed through Unbound. If the list is incomplete in some way then the networks were not on the interface when the Unbound config was generated.

                                            Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

                                            Need help fast? Netgate Global Support!

                                            Do not Chat/PM for help!

                                            Bob.DigB 1 Reply Last reply Reply Quote 0
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