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    Can not resolve a DNS

    Scheduled Pinned Locked Moved General pfSense Questions
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    • johnpozJ Online
      johnpoz LAYER 8 Global Moderator
      last edited by

      C:\Users\Chris>nslookup melita.com
      Server:  pfSense.localdomain
      Address:  192.168.0.1

      *** pfSense.localdomain can't find melita.com: Server failed

      Yeah sure looks like your having a issue resolving it.. Do you have pfsense using itself for dns??  Or do you have it using something else??  Thought you said your dns query for it worked??  From that you first got a timeout, pfsense was trying to resolve??  Then you get back serv failed..  Which normally means could not talk to the NS it..  So is psfense using itself, ie this will use resolver out of the box in resolver mode and pfsense asking the resolver for stuff it wants to resolve.

      nslookup is not as good at helping debug dns issues as dig is.  What I would suggest you do is install dig on your windows box, or use linux with dig or drill and do a trace..  This will talk to the roots and walk down the tree just like unbound does in resolver mode.  This should tell you where there is an issue.

      so example..

      
      > dig +trace +nodnssec melita.com
      
      ; <<>> DiG 9.11.0-P1 <<>> +trace +nodnssec melita.com
      ;; global options: +cmd
      .                       494382  IN      NS      j.root-servers.net.
      .                       494382  IN      NS      m.root-servers.net.
      .                       494382  IN      NS      a.root-servers.net.
      .                       494382  IN      NS      c.root-servers.net.
      .                       494382  IN      NS      e.root-servers.net.
      .                       494382  IN      NS      d.root-servers.net.
      .                       494382  IN      NS      k.root-servers.net.
      .                       494382  IN      NS      h.root-servers.net.
      .                       494382  IN      NS      f.root-servers.net.
      .                       494382  IN      NS      i.root-servers.net.
      .                       494382  IN      NS      b.root-servers.net.
      .                       494382  IN      NS      l.root-servers.net.
      .                       494382  IN      NS      g.root-servers.net.
      ;; Received 239 bytes from 192.168.9.253#53(192.168.9.253) in 0 ms
      
      com.                    172800  IN      NS      a.gtld-servers.net.
      com.                    172800  IN      NS      b.gtld-servers.net.
      com.                    172800  IN      NS      c.gtld-servers.net.
      com.                    172800  IN      NS      d.gtld-servers.net.
      com.                    172800  IN      NS      e.gtld-servers.net.
      com.                    172800  IN      NS      f.gtld-servers.net.
      com.                    172800  IN      NS      g.gtld-servers.net.
      com.                    172800  IN      NS      h.gtld-servers.net.
      com.                    172800  IN      NS      i.gtld-servers.net.
      com.                    172800  IN      NS      j.gtld-servers.net.
      com.                    172800  IN      NS      k.gtld-servers.net.
      com.                    172800  IN      NS      l.gtld-servers.net.
      com.                    172800  IN      NS      m.gtld-servers.net.
      ;; Received 527 bytes from 192.203.230.10#53(e.root-servers.net) in 15 ms
      
      melita.com.             172800  IN      NS      ns.melitacable.com.
      melita.com.             172800  IN      NS      ns1.melitacable.com.
      ;; Received 118 bytes from 192.55.83.30#53(m.gtld-servers.net) in 124 ms
      
      melita.com.             86400   IN      A       212.56.128.204
      melita.com.             86400   IN      NS      ns1.melitacable.com.
      melita.com.             86400   IN      NS      ns.melitacable.com.
      ;; Received 134 bytes from 212.56.128.132#53(ns.melitacable.com) in 156 ms
      
      

      You see it get roots, ask them for NS for .com, then ask .com NS who is NS for melita.com, then ask one of those NS for for the A record..

      You can just download dig for free as part of bind, then just install the "tools" 
      https://www.isc.org/downloads/

      Or just do it direct from pfsense with drill

      
      [2.3.2-RELEASE][root@pfsense.local.lan]/root: drill -T melita.com
      com.    172800  IN      NS      h.gtld-servers.net.
      com.    172800  IN      NS      l.gtld-servers.net.
      com.    172800  IN      NS      a.gtld-servers.net.
      com.    172800  IN      NS      e.gtld-servers.net.
      com.    172800  IN      NS      f.gtld-servers.net.
      com.    172800  IN      NS      d.gtld-servers.net.
      com.    172800  IN      NS      g.gtld-servers.net.
      com.    172800  IN      NS      j.gtld-servers.net.
      com.    172800  IN      NS      b.gtld-servers.net.
      com.    172800  IN      NS      m.gtld-servers.net.
      com.    172800  IN      NS      k.gtld-servers.net.
      com.    172800  IN      NS      i.gtld-servers.net.
      com.    172800  IN      NS      c.gtld-servers.net.
      melita.com.     172800  IN      NS      ns.melitacable.com.
      melita.com.     172800  IN      NS      ns1.melitacable.com.
      melita.com.     86400   IN      A       212.56.128.204
      melita.com.     86400   IN      NS      ns1.melitacable.com.
      melita.com.     86400   IN      NS      ns.melitacable.com.
      
      

      If it fails - you can u the verbosity with

      drill -T -V 5 melita.com

      pfsensedns.png
      pfsensedns.png_thumb

      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 25.07 | Lab VMs 2.8, 25.07

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      • C Offline
        Chrismallia
        last edited by

        Hi here is the dig

        C:\Users\Chris>dig melita.com

        ; <<>> DiG 9.11.0-P1 <<>> melita.com
        ;; global options: +cmd
        ;; Got answer:
        ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 661
        ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

        ;; OPT PSEUDOSECTION:
        ; EDNS: version: 0, flags:; udp: 4096
        ; COOKIE: 95b8d2028f289628 (echoed)
        ;; QUESTION SECTION:
        ;melita.com.                    IN      A

        ;; Query time: 0 msec
        ;; SERVER: 192.168.0.1#53(192.168.0.1)
        ;; WHEN: Sun Nov 27 16:04:07 W. Europe Standard Time 2016
        ;; MSG SIZE  rcvd: 51

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        • johnpozJ Online
          johnpoz LAYER 8 Global Moderator
          last edited by

          No this not the dig I showed you.. Do a full trace.. and forget any dnssec stuff.. Maybe that is what is failing for you, which is why lets do it without the dnssec, etc.

          dig +trace +nodnssec melita.com

          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 25.07 | Lab VMs 2.8, 25.07

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          • C Offline
            Chrismallia
            last edited by

            :) sorry is this it

            C:\Users\Chris>dig trace nodnssec melita.com

            ; <<>> DiG 9.11.0-P1 <<>> trace nodnssec melita.com
            ;; global options: +cmd
            ;; Got answer:
            ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 539
            ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

            ;; OPT PSEUDOSECTION:
            ; EDNS: version: 0, flags:; udp: 4096
            ;; QUESTION SECTION:
            ;trace.                        IN      A

            ;; AUTHORITY SECTION:
            .                      2594    IN      SOA    a.root-servers.net. nstld.verisign-grs.com. 2016112700 1800 900 604800 86400

            ;; Query time: 63 msec
            ;; SERVER: 192.168.0.1#53(192.168.0.1)
            ;; WHEN: Sun Nov 27 16:35:12 W. Europe Standard Time 2016
            ;; MSG SIZE  rcvd: 109

            ;; Got answer:
            ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 44812
            ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

            ;; OPT PSEUDOSECTION:
            ; EDNS: version: 0, flags:; udp: 4096
            ;; QUESTION SECTION:
            ;nodnssec.                      IN      A

            ;; AUTHORITY SECTION:
            .                      2594    IN      SOA    a.root-servers.net. nstld.verisign-grs.com. 2016112700 1800 900 604800 86400

            ;; Query time: 62 msec
            ;; SERVER: 192.168.0.1#53(192.168.0.1)
            ;; WHEN: Sun Nov 27 16:35:12 W. Europe Standard Time 2016
            ;; MSG SIZE  rcvd: 112

            ;; connection timed out; no servers could be reached

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            • johnpozJ Online
              johnpoz LAYER 8 Global Moderator
              last edited by

              Dude copy and paste!!  you need the + signs…

              do you not even read what it outputs

              ;; QUESTION SECTION:
              ;trace.                        IN      A

              Are you hungover or something?  Need a cup of coffee or 3?

              edit:  Oh your EU time.. Maybe your already started hitting the hooch? ;)

              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 25.07 | Lab VMs 2.8, 25.07

              1 Reply Last reply Reply Quote 0
              • C Offline
                Chrismallia
                last edited by

                C:\Users\Chris>dig +trace +nodnssec melita.com

                ; <<>> DiG 9.11.0-P1 <<>> +trace +nodnssec melita.com
                ;; global options: +cmd
                ;; Received 12 bytes from 192.168.0.1#53(192.168.0.1) in 0 ms

                :) sorry

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                • johnpozJ Online
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  that is your full output??

                  Is 192.168.0.1 pfsense?  And you have it resolver mode?  It should of atleast given you the root servers..  You got something wrong..

                  Try it with just the +trace option

                  dig +trace melita.com

                  Also dig NS what does that give you back?

                  
                  C:\>dig NS
                  
                  ; <<>> DiG 9.11.0-P1 <<>> NS
                  ;; global options: +cmd
                  ;; Got answer:
                  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33584
                  ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 1
                  
                  ;; OPT PSEUDOSECTION:
                  ; EDNS: version: 0, flags:; udp: 4096
                  ;; QUESTION SECTION:
                  ;.                              IN      NS
                  
                  ;; ANSWER SECTION:
                  .                       487240  IN      NS      j.root-servers.net.
                  .                       487240  IN      NS      m.root-servers.net.
                  .                       487240  IN      NS      a.root-servers.net.
                  .                       487240  IN      NS      c.root-servers.net.
                  .                       487240  IN      NS      e.root-servers.net.
                  .                       487240  IN      NS      d.root-servers.net.
                  .                       487240  IN      NS      k.root-servers.net.
                  .                       487240  IN      NS      h.root-servers.net.
                  .                       487240  IN      NS      f.root-servers.net.
                  .                       487240  IN      NS      i.root-servers.net.
                  .                       487240  IN      NS      b.root-servers.net.
                  .                       487240  IN      NS      l.root-servers.net.
                  .                       487240  IN      NS      g.root-servers.net.
                  
                  ;; Query time: 0 msec
                  ;; SERVER: 192.168.9.253#53(192.168.9.253)
                  ;; WHEN: Sun Nov 27 09:49:40 Central Standard Time 2016
                  ;; MSG SIZE  rcvd: 239
                  
                  

                  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 25.07 | Lab VMs 2.8, 25.07

                  1 Reply Last reply Reply Quote 0
                  • C Offline
                    Chrismallia
                    last edited by

                    yes 192.168.0.1 is my pfsense and left everything default

                    C:\Users\Chris>dig +trace melita.com

                    ; <<>> DiG 9.11.0-P1 <<>> +trace melita.com
                    ;; global options: +cmd
                    ;; Received 12 bytes from 192.168.0.1#53(192.168.0.1) in 0 ms

                    1 Reply Last reply Reply Quote 0
                    • C Offline
                      Chrismallia
                      last edited by

                      C:\Users\Chris>dig NS

                      ; <<>> DiG 9.11.0-P1 <<>> NS
                      ;; global options: +cmd
                      ;; Got answer:
                      ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65221
                      ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 1

                      ;; OPT PSEUDOSECTION:
                      ; EDNS: version: 0, flags:; udp: 4096
                      ;; QUESTION SECTION:
                      ;.                              IN      NS

                      ;; ANSWER SECTION:
                      .                      512472  IN      NS      l.root-servers.net.
                      .                      512472  IN      NS      h.root-servers.net.
                      .                      512472  IN      NS      d.root-servers.net.
                      .                      512472  IN      NS      f.root-servers.net.
                      .                      512472  IN      NS      m.root-servers.net.
                      .                      512472  IN      NS      a.root-servers.net.
                      .                      512472  IN      NS      b.root-servers.net.
                      .                      512472  IN      NS      j.root-servers.net.
                      .                      512472  IN      NS      k.root-servers.net.
                      .                      512472  IN      NS      i.root-servers.net.
                      .                      512472  IN      NS      c.root-servers.net.
                      .                      512472  IN      NS      e.root-servers.net.
                      .                      512472  IN      NS      g.root-servers.net.

                      ;; Query time: 0 msec
                      ;; SERVER: 192.168.0.1#53(192.168.0.1)
                      ;; WHEN: Sun Nov 27 16:57:10 W. Europe Standard Time 2016
                      ;; MSG SIZE  rcvd: 239

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                      • johnpozJ Online
                        johnpoz LAYER 8 Global Moderator
                        last edited by

                        WTF???

                        So try the +trace +nodnssec command on some other domain that works..

                        say pfsense.org

                        
                        C:\>dig +trace +nodnssec pfsense.org
                        
                        ; <<>> DiG 9.11.0-P1 <<>> +trace +nodnssec pfsense.org
                        ;; global options: +cmd
                        .                       485772  IN      NS      j.root-servers.net.
                        .                       485772  IN      NS      m.root-servers.net.
                        .                       485772  IN      NS      a.root-servers.net.
                        .                       485772  IN      NS      c.root-servers.net.
                        .                       485772  IN      NS      e.root-servers.net.
                        .                       485772  IN      NS      d.root-servers.net.
                        .                       485772  IN      NS      k.root-servers.net.
                        .                       485772  IN      NS      h.root-servers.net.
                        .                       485772  IN      NS      f.root-servers.net.
                        .                       485772  IN      NS      i.root-servers.net.
                        .                       485772  IN      NS      b.root-servers.net.
                        .                       485772  IN      NS      l.root-servers.net.
                        .                       485772  IN      NS      g.root-servers.net.
                        ;; Received 239 bytes from 192.168.9.253#53(192.168.9.253) in 0 ms
                        
                        org.                    172800  IN      NS      b0.org.afilias-nst.org.
                        org.                    172800  IN      NS      a2.org.afilias-nst.info.
                        org.                    172800  IN      NS      c0.org.afilias-nst.info.
                        org.                    172800  IN      NS      a0.org.afilias-nst.info.
                        org.                    172800  IN      NS      d0.org.afilias-nst.org.
                        org.                    172800  IN      NS      b2.org.afilias-nst.org.
                        ;; Received 442 bytes from 192.33.4.12#53(c.root-servers.net) in 13 ms
                        
                        pfsense.org.            86400   IN      NS      ns1.netgate.com.
                        pfsense.org.            86400   IN      NS      ns2.netgate.com.
                        ;; Received 87 bytes from 199.249.112.1#53(a2.org.afilias-nst.info) in 12 ms
                        
                        pfsense.org.            300     IN      A       208.123.73.69
                        pfsense.org.            300     IN      NS      ns2.netgate.com.
                        pfsense.org.            300     IN      NS      ns1.netgate.com.
                        ;; Received 135 bytes from 192.207.126.6#53(ns1.netgate.com) in 54 ms
                        
                        

                        you didn't put in some domain overrides or anything for this melita.com did you???

                        Ok I was able to duplicate what you saw.. Your ACL is only set to allow vs allow snoop..

                        
                        > dig +trace +nodnssec melita.com
                        
                        ; <<>> DiG 9.11.0-P1 <<>> +trace +nodnssec melita.com
                        ;; global options: +cmd
                        ;; Received 12 bytes from 192.168.9.253#53(192.168.9.253) in 1 ms
                        
                        

                        Go into your unbound acl and change to allow snoop vs allow.. Then try the +trace dig again.

                        acl.jpg_thumb
                        acl.jpg

                        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 25.07 | Lab VMs 2.8, 25.07

                        1 Reply Last reply Reply Quote 0
                        • C Offline
                          Chrismallia
                          last edited by

                          sorry dude did the acl but same

                          C:\Users\Chris>dig +trace +nodnssec pfsense.org

                          ; <<>> DiG 9.11.0-P1 <<>> +trace +nodnssec pfsense.org
                          ;; global options: +cmd
                          ;; Received 12 bytes from 192.168.0.1#53(192.168.0.1) in 0 ms

                          1 Reply Last reply Reply Quote 0
                          • C Offline
                            Chrismallia
                            last edited by

                            I really really thank you for all your time and help. But if it is  getting a headache for you please do not feel obligated in anyway to resolve this for me. Thanks again friend

                            1 Reply Last reply Reply Quote 0
                            • C Offline
                              Chrismallia
                              last edited by

                              I disabled resolver and enabled the forwarder, in forwarder  the site resolves and works fine.

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

                                Are you using the ACL??

                                Did you turn off the auto ones?
                                Disable Auto-added Access Control

                                In the advanced section of unbound?

                                Try the drill command from pfsense directly.. what we are looking for is where it fails in the resolve process for that domain.. Is it talking to their authoritative servers??

                                You could try that.. do say

                                
                                > dig @212.56.128.196 melita.com.
                                
                                ; <<>> DiG 9.11.0-P1 <<>> @212.56.128.196 melita.com.
                                ; (1 server found)
                                ;; global options: +cmd
                                ;; Got answer:
                                ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33157
                                ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3
                                ;; WARNING: recursion requested but not available
                                
                                ;; OPT PSEUDOSECTION:
                                ; EDNS: version: 0, flags:; udp: 4096
                                ;; QUESTION SECTION:
                                ;melita.com.                    IN      A
                                
                                ;; ANSWER SECTION:
                                melita.com.             86400   IN      A       212.56.128.204
                                
                                ;; AUTHORITY SECTION:
                                melita.com.             86400   IN      NS      ns1.melitacable.com.
                                melita.com.             86400   IN      NS      ns.melitacable.com.
                                
                                ;; ADDITIONAL SECTION:
                                ns.melitacable.com.     86400   IN      A       212.56.128.132
                                ns1.melitacable.com.    86400   IN      A       212.56.128.196
                                
                                ;; Query time: 158 msec
                                ;; SERVER: 212.56.128.196#53(212.56.128.196)
                                ;; WHEN: Sun Nov 27 11:30:00 Central Standard Time 2016
                                ;; MSG SIZE  rcvd: 134
                                
                                

                                Try the other NS if that one fails 212.56.128.196

                                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 25.07 | Lab VMs 2.8, 25.07

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                                • C Offline
                                  Chrismallia
                                  last edited by

                                  Hi John sorry  for the delay I will do drill command in pfsense and get back to you  btw yes I disabled the auto ACL in advanced settings

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                                  • johnpozJ Online
                                    johnpoz LAYER 8 Global Moderator
                                    last edited by

                                    if you have a ACL setup correctly then you for sure should be able to get the roots from pfsense and then your dig +trace command should work, or atleast return with the roots, it might fail after that but its shouldn't come back blank like you were seeing.

                                    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 25.07 | Lab VMs 2.8, 25.07

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                                    • C Offline
                                      Chrismallia
                                      last edited by

                                      Is this it

                                      ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 8444
                                      ;; flags: qr rd ra ; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
                                      ;; QUESTION SECTION:
                                      ;; melita.com. IN A

                                      ;; ANSWER SECTION:
                                      melita.com. 79580 IN A 212.56.128.204

                                      ;; AUTHORITY SECTION:

                                      ;; ADDITIONAL SECTION:

                                      ;; Query time: 12 msec
                                      ;; SERVER: 212.56.129.228
                                      ;; WHEN: Mon Nov 28 18:44:37 2016
                                      ;; MSG SIZE  rcvd: 44

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                                      • C Offline
                                        Chrismallia
                                        last edited by

                                        when I Disable Auto-added Access Control nothing gets resolved I had to uncheck  it

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                                        • johnpozJ Online
                                          johnpoz LAYER 8 Global Moderator
                                          last edited by

                                          this is because if you don't use the auto, you have to create your own!!!  Which you said you did, I posted a screen of mine as example..

                                          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 25.07 | Lab VMs 2.8, 25.07

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                                          • johnpozJ Online
                                            johnpoz LAYER 8 Global Moderator
                                            last edited by

                                            you don't need the ipv6.. Shoot I should of hid thouse..  Could you please delete that pic, I will delete mine and repost with thos hidden.

                                            You need to put in the network your using.. What network are you using - if for example 172.16/12 then my acl would not work for you..

                                            Your using 192.168.0/24 right.. So if that is the only network you query pfsense from then that would be in your allow list.  So if you put in 192.168/16 like I have then it should work.. So your still not getting the root servers when you do a +trace from your client on 192.168 network??

                                            Do the drill command on pfsense then.. Lets see where its failing.

                                            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 25.07 | Lab VMs 2.8, 25.07

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