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    Unbound frequently restarts on 2.2 - is this normal?

    DHCP and DNS
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    • M
      macboy6
      last edited by

      While troubleshooting another issue, I discovered frequent restarts (every hour) in the unbound log.  Is this normal or is something wrong?

      Feb 5 15:50:06 unbound: [13647:0] info: start of service (unbound 1.5.1).
      Feb 5 15:50:06 unbound: [13647:0] notice: init module 0: iterator
      Feb 5 15:50:06 unbound: [13647:0] notice: Restart of unbound 1.5.1.

      Feb 5 16:50:30 unbound: [13647:0] info: start of service (unbound 1.5.1).
      Feb 5 16:50:30 unbound: [13647:0] notice: init module 0: iterator
      Feb 5 16:50:30 unbound: [13647:0] notice: Restart of unbound 1.5.1.

      Thanks,
      Marco

      2.2-RELEASE (i386)
      nanobsd (2g)

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      • D
        doktornotor Banned
        last edited by

        Check the system log for what's going on at the time when unbound gets restarted. Like, new DHCP lease on WAN.

        1 Reply Last reply Reply Quote 0
        • E
          EricE
          last edited by

          Like, new DHCP lease on WAN.

          Something is up with 2.2 and DHCP.  I'm getting all kinds of DHCP resets that I never got before 2.2.  It's causing all kinds of issues with apinger and unbound; typically manifested as me "loosing" internet connectivity for 3-5 minutes.

          I've not been able to isolate what the heck is going on as there isn't much in the logs, but the common thread is DHCP address renewal (my WAN IP address hasn't changed since I initially got my FIOS connection).  I don't know what is different but it's really been frustrating trying to nail down where the blame lies.  I think most of it is with apinger which I'm about ready to just turn off, which is a shame since I like some of the RRD reports it contributes to.  But I like stable internet even more :p

          1 Reply Last reply Reply Quote 0
          • I
            Inq
            last edited by

            I have the same problem with unbound. There seems to be a direct connection between unbound stopping and restarting and DHCP leases. At 8:56:11 the unbound service stopped and then restarted:

            Feb 11 08:56:11	unbound: [16927:0] info: start of service (unbound 1.5.1).
Feb 11 08:56:11	unbound: [16927:0] notice: init module 1: iterator
Feb 11 08:56:11	unbound: [16927:0] notice: init module 0: validator
Feb 11 08:56:11	unbound: [16927:0] notice: Restart of unbound 1.5.1.
Feb 11 08:56:11	unbound: [16927:0] info: 0.262144 0.524288 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.065536 0.131072 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.032768 0.065536 9
Feb 11 08:56:11	unbound: [16927:0] info: 0.016384 0.032768 2
Feb 11 08:56:11	unbound: [16927:0] info: 0.008192 0.016384 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.004096 0.008192 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.002048 0.004096 3
Feb 11 08:56:11	unbound: [16927:0] info: 0.001024 0.002048 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.000000 0.000001 1
Feb 11 08:56:11	unbound: [16927:0] info: lower(secs) upper(secs) recursions
Feb 11 08:56:11	unbound: [16927:0] info: [25%]=0.004096 median[50%]=0.0364089 [75%]=0.0546133
Feb 11 08:56:11	unbound: [16927:0] info: histogram of recursion processing times
Feb 11 08:56:11	unbound: [16927:0] info: average recursion processing time 0.044537 sec
Feb 11 08:56:11	unbound: [16927:0] info: server stats for thread 1: requestlist max 2 avg 0.3 exceeded 0 jostled 0
Feb 11 08:56:11	unbound: [16927:0] info: server stats for thread 1: 111 queries, 91 answers from cache, 20 recursions, 0 prefetch
Feb 11 08:56:11	unbound: [16927:0] info: 0.524288 1.000000 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.262144 0.524288 2
Feb 11 08:56:11	unbound: [16927:0] info: 0.131072 0.262144 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.065536 0.131072 2
Feb 11 08:56:11	unbound: [16927:0] info: 0.032768 0.065536 6
Feb 11 08:56:11	unbound: [16927:0] info: 0.016384 0.032768 6
Feb 11 08:56:11	unbound: [16927:0] info: 0.008192 0.016384 1
Feb 11 08:56:11	unbound: [16927:0] info: 0.004096 0.008192 5
Feb 11 08:56:11	unbound: [16927:0] info: 0.002048 0.004096 4
Feb 11 08:56:11	unbound: [16927:0] info: lower(secs) upper(secs) recursions
Feb 11 08:56:11	unbound: [16927:0] info: [25%]=0.0065536 median[50%]=0.0273067 [75%]=0.0600747
Feb 11 08:56:11	unbound: [16927:0] info: histogram of recursion processing times
Feb 11 08:56:11	unbound: [16927:0] info: average recursion processing time 0.082688 sec
Feb 11 08:56:11	unbound: [16927:0] info: server stats for thread 0: requestlist max 3 avg 0.857143 exceeded 0 jostled 0
Feb 11 08:56:11	unbound: [16927:0] info: server stats for thread 0: 136 queries, 108 answers from cache, 28 recursions, 0 prefetch
Feb 11 08:56:11	unbound: [16927:0] info: service stopped (unbound 1.5.1).

            At that exact time i get this in DHCP logs:

            Feb 11 08:56:11 dhcpd: DHCPACK on 192.168.1.15 to 1c:af:f7:xx:xx:xx (DIR-600) via em0
            Feb 11 08:56:11 dhcpd: DHCPREQUEST for 192.168.1.15 from 1c:af:f7:xx:xx:xx (DIR-600) via em0
            Feb 11 08:56:11 dhcpd: Wrote 9 leases to leases file.
            Feb 11 08:56:11 dhcpd: Wrote 0 new dynamic host decls to leases file.
            Feb 11 08:56:11 dhcpd: Wrote 0 deleted host decls to leases file.

            Again at 09:57:00 unbound service restarts:

            Feb 11 09:57:00	unbound: [16927:0] info: start of service (unbound 1.5.1).
Feb 11 09:57:00	unbound: [16927:0] notice: init module 1: iterator
Feb 11 09:57:00	unbound: [16927:0] notice: init module 0: validator
Feb 11 09:57:00	unbound: [16927:0] notice: Restart of unbound 1.5.1.
Feb 11 09:57:00	unbound: [16927:0] info: 0.524288 1.000000 1
Feb 11 09:57:00	unbound: [16927:0] info: 0.262144 0.524288 6

            Corelated with this DHCP log:

            Feb 11 09:57:00 router dhcpd: DHCPOFFER on 192.168.1.17 to 78:dd:08:xx:xx:xx (vaio) via em0
Feb 11 09:57:00 router dhcpd: Wrote 0 deleted host decls to leases file.
Feb 11 09:57:00 router dhcpd: Wrote 0 new dynamic host decls to leases file.
Feb 11 09:57:00 router dhcpd: Wrote 9 leases to leases file.
Feb 11 09:57:00 router dhcpd: DHCPREQUEST for 192.168.1.17 (192.168.1.1) from 78:dd:08:xx:xx:xx (vaio) via em0
Feb 11 09:57:00 router dhcpd: DHCPACK on 192.168.1.17 to 78:dd:08:xx:xx:xx (vaio) via em0
Feb 11 09:57:00 router dhcpd: Request message from fe80::dc38:d6fa:xxx:xxx port 546, transaction ID 0x6B31FC00
Feb 11 09:57:00 router dhcpd: Sending Reply to fe80::dc38:d6fa:xxx:xxx port 546

            And yet again at 10:57:17:

            Feb 11 10:57:17	unbound: [16927:0] info: start of service (unbound 1.5.1).
Feb 11 10:57:17	unbound: [16927:0] notice: init module 1: iterator
Feb 11 10:57:17	unbound: [16927:0] notice: init module 0: validator
Feb 11 10:57:17	unbound: [16927:0] notice: Restart of unbound 1.5.1.
Feb 11 10:57:17	unbound: [16927:0] info: 2.000000 4.000000 1
Feb 11 10:57:17	unbound: [16927:0] info: 1.000000 2.000000 1
Feb 11 10:57:17	unbound: [16927:0] info: 0.524288 1.000000 4
Feb 11 10:57:17	unbound: [16927:0] info: 0.262144 0.524288 8
Feb 11 10:57:17	unbound: [16927:0] info: 0.131072 0.262144 9
Feb 11 10:57:17	unbound: [16927:0] info: 0.065536 0.131072 12
Feb 11 10:57:17	unbound: [16927:0] info: 0.032768 0.065536 23
Feb 11 10:57:17	unbound: [16927:0] info: 0.016384 0.032768 43
Feb 11 10:57:17	unbound: [16927:0] info: 0.008192 0.016384 41
Feb 11 10:57:17	unbound: [16927:0] info: 0.004096 0.008192 57
Feb 11 10:57:17	unbound: [16927:0] info: 0.002048 0.004096 43
Feb 11 10:57:17	unbound: [16927:0] info: 0.001024 0.002048 9
Feb 11 10:57:17	unbound: [16927:0] info: 0.000512 0.001024 1
Feb 11 10:57:17	unbound: [16927:0] info: 0.000000 0.000001 19
Feb 11 10:57:17	unbound: [16927:0] info: lower(secs) upper(secs) recursions
Feb 11 10:57:17	unbound: [16927:0] info: [25%]=0.00389358 median[50%]=0.00949073 [75%]=0.029053
Feb 11 10:57:17	unbound: [16927:0] info: histogram of recursion processing times
Feb 11 10:57:17	unbound: [16927:0] info: average recursion processing time 0.054781 sec
Feb 11 10:57:17	unbound: [16927:0] info: server stats for thread 1: requestlist max 4 avg 0.231618 exceeded 0 jostled 0
Feb 11 10:57:17	unbound: [16927:0] info: server stats for thread 1: 329 queries, 57 answers from cache, 272 recursions, 0 prefetch
Feb 11 10:57:17	unbound: [16927:0] info: 1.000000 2.000000 2
Feb 11 10:57:17	unbound: [16927:0] info: 0.524288 1.000000 9
Feb 11 10:57:17	unbound: [16927:0] info: 0.262144 0.524288 19
Feb 11 10:57:17	unbound: [16927:0] info: 0.131072 0.262144 23
Feb 11 10:57:17	unbound: [16927:0] info: 0.065536 0.131072 24
Feb 11 10:57:17	unbound: [16927:0] info: 0.032768 0.065536 44
Feb 11 10:57:17	unbound: [16927:0] info: 0.016384 0.032768 68
Feb 11 10:57:17	unbound: [16927:0] info: 0.008192 0.016384 66
Feb 11 10:57:17	unbound: [16927:0] info: 0.004096 0.008192 95
Feb 11 10:57:17	unbound: [16927:0] info: 0.002048 0.004096 45
Feb 11 10:57:17	unbound: [16927:0] info: 0.001024 0.002048 12
Feb 11 10:57:17	unbound: [16927:0] info: 0.000512 0.001024 1
Feb 11 10:57:17	unbound: [16927:0] info: 0.000000 0.000001 20
Feb 11 10:57:17	unbound: [16927:0] info: lower(secs) upper(secs) recursions
Feb 11 10:57:17	unbound: [16927:0] info: [25%]=0.00534636 median[50%]=0.013281 [75%]=0.0431942
Feb 11 10:57:17	unbound: [16927:0] info: histogram of recursion processing times
Feb 11 10:57:17	unbound: [16927:0] info: average recursion processing time 0.066407 sec
Feb 11 10:57:17	unbound: [16927:0] info: server stats for thread 0: requestlist max 4 avg 0.441589 exceeded 0 jostled 0
Feb 11 10:57:17	unbound: [16927:0] info: server stats for thread 0: 516 queries, 88 answers from cache, 428 recursions, 0 prefetch
Feb 11 10:57:17	unbound: [16927:0] info: service stopped (unbound 1.5.1).

            DHCP logs:

            Feb 11 10:57:17	dhcpd: Sending Reply to fe80::1863:4b13:xxxx:xxxx port 546
Feb 11 10:57:17	dhcpd: Confirm message from fe80::1863:4b13:xxxx:xxxx port 546, transaction ID 0x51830100
Feb 11 10:57:17	dhcpd: DHCPACK on 192.168.1.12 to 78:7e:61:xx:xx:xx (Anamas-iPhone) via em0
Feb 11 10:57:17	dhcpd: DHCPREQUEST for 192.168.1.12 from 78:7e:61:xx:xx:xx (Anamas-iPhone) via em0
Feb 11 10:57:17	dhcpd: Wrote 9 leases to leases file.
Feb 11 10:57:17	dhcpd: Wrote 0 new dynamic host decls to leases file.
Feb 11 10:57:17	dhcpd: Wrote 0 deleted host decls to leases file.

            The problem with making something idiot proof is that the world keeps making better idiots.

            1 Reply Last reply Reply Quote 0
            • P
              phil.davis
              last edited by

              Do you have a cron job rc.backup_dhcpleases.sh that is running every hour?

              It must be over-enthusiastic and restart unbound when the lease file is written. Perhaps it can just send unbound a message? Or perhaps it does not need to tell unbound anything - unbound should already be getting DHCP lease data on-the-fly as it happens?

              As the Greek philosopher Isosceles used to say, "There are 3 sides to every triangle."
              If I helped you, then help someone else - buy someone a gift from the INF catalog http://secure.inf.org/gifts/usd/

              1 Reply Last reply Reply Quote 0
              • I
                Inq
                last edited by

                Nope…

                $ crontab -l
                crontab: no crontab for root

                The problem with making something idiot proof is that the world keeps making better idiots.

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                • P
                  phil.davis
                  last edited by 

                  crontab -l

                  That does not work for me either.

                  cat /etc/crontab

                  and see what is there.
                  Or instal the Cron package and you an see the cron jobs in the webGUI.

                  As the Greek philosopher Isosceles used to say, "There are 3 sides to every triangle."
                  If I helped you, then help someone else - buy someone a gift from the INF catalog http://secure.inf.org/gifts/usd/

                  1 Reply Last reply Reply Quote 0
                  • I
                    Inq
                    last edited by

                    $ cat /etc/crontab
                    SHELL=/bin/sh
                    PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin
                    HOME=/var/log
                    #minute hour    mday    month  wday    who      command

                    pfSense specific crontab entries

                    Created: February 8, 2015, 6:13 pm

                    1,31 0-5 * * * root /usr/bin/nice -n20 adjkerntz -a
                    1 3 1 * * root /usr/bin/nice -n20 /etc/rc.update_bogons.sh
                    */60 * * * * root /usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 sshlockout
                    1 1 * * * root /usr/bin/nice -n20 /etc/rc.dyndns.update
                    */60 * * * * root /usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 virusprot
                    30 12 * * * root /usr/bin/nice -n20 /etc/rc.update_urltables
                    */60 * * * * root /usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 webConfiguratorlockout

                    If possible do not add items to this file manually.

                    If you do so, this file must be terminated with a blank line (e.g. new line)

                    The problem with making something idiot proof is that the world keeps making better idiots.

                    1 Reply Last reply Reply Quote 0
                    • M
                      macboy6
                      last edited by

                      I am going to have to assume this is the intended behaviour at this point.  It doesn't cause any adverse effects for me.

                      I do have the OpenVPN client configured (in case this is somehow interacting with unbound) but it is constantly connected and not restarting.

                      Would be nice to get confirmation from one of the developers though…

                      1 Reply Last reply Reply Quote 0
                      • K
                        kejianshi
                        last edited by

                        No - Its not intentional (Unless mine is broken.  Unbound has been running without service restart for a week)

                        1 Reply Last reply Reply Quote 0
                        • H
                          hda
                          last edited by

                          @macboy6:

                          While troubleshooting another issue, I discovered frequent restarts (every hour) in the unbound log.  Is this normal or is something wrong?

                          Related to your ISP lease renewal ? Status: System logs: General:
                          …
                          () check_reload_status: Starting packages
                          () php-fpm[34310]: /rc.start_packages: Restarting/Starting all packages.
                          …

                          1 Reply Last reply Reply Quote 0
                          • M
                            macboy6
                            last edited by

                            Nope, nothing correlates in system logs.  I do have Dynamic DNS setup though but that only updates once per day, so doubt it's related.

                            Cron jobs output:

                            SHELL=/bin/sh
                            PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin
                            HOME=/var/log
                            #minute hour    mday    month  wday    who      command

                            pfSense specific crontab entries

                            Created: February 7, 2015, 8:05 pm

                            1,31 0-5 * * * root /usr/bin/nice -n20 adjkerntz -a
                            1 3 1 * * root /usr/bin/nice -n20 /etc/rc.update_bogons.sh
                            */60 * * * * root /usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 sshlockout
                            */60 * * * * root /usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 webConfiguratorlockout
                            1 1 * * * root /usr/bin/nice -n20 /etc/rc.dyndns.update
                            */60 * * * * root /usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 virusprot
                            30 12 * * * root /usr/bin/nice -n20 /etc/rc.update_urltables

                            If possible do not add items to this file manually.

                            If you do so, this file must be terminated with a blank line (e.g. new line)

                            1 Reply Last reply Reply Quote 0
                            • I
                              Inq
                              last edited by

                              One thing is clear in my case : Every time the dhcp service writes leases to leases file the unbound service restarts…every single time.

                              The problem with making something idiot proof is that the world keeps making better idiots.

                              1 Reply Last reply Reply Quote 0
                              • M
                                macboy6
                                last edited by

                                Inq - I just noticed that one of my network devices (Apple TV) was going crazy asking for dhcp every few seconds.  I did a clean install of 2.2 and didnt reboot some of my devices, which probably caused this issue.

                                I am now thinking that this issue could have been causing the frequent unbound resets.  I will monitor and update this thread.

                                Thanks,
                                Marco

                                1 Reply Last reply Reply Quote 0
                                • K
                                  kejianshi
                                  last edited by

                                  It would be interesting and probably helpful to see your DHCP server setting and your unbound settings.

                                  1 Reply Last reply Reply Quote 0
                                  • M
                                    macboy6
                                    last edited by

                                    Ok, this issue was definitely caused by a misconfiguration on my Apple TV (connected to both wired and wireless simultaneously).  This was causing the Apple TV to get stuck in a DHCP request loop (verified by DHCP logs).

                                    In addition, I have the following setting in Unbound: Register DHCP leases in the DNS Resolver

                                    Since I corrected the Apple TV issue, the hourly unbound restarts have stopped.

                                    Thanks,
                                    Marco

                                    1 Reply Last reply Reply Quote 0
                                    • K
                                      kejianshi
                                      last edited by

                                      Sounds like something I see lots of people doing with laptops.  Plugging in wired while wireless is still on.  Same with IP Cams.

                                      1 Reply Last reply Reply Quote 0
                                      • W
                                        wbond
                                        last edited by

                                        @Inq:

                                        One thing is clear in my case : Every time the dhcp service writes leases to leases file the unbound service restarts…every single time.

                                        I noticed the same thing the other day, unbound restarting every time the dhcp service wrote the leases file, about once an hour.  It hadn't been doing this until I changed the setting for "unwanted reply threshold" in the dns resolver advanced settings from disabled to 10 million.  I changed it back to disabled yesterday and unbound has not restarted since.  No idea what the relationship is, but there seems to be one.

                                        edit: nevermind, changed another setting in dns resolver and now unbound is restarting at the same time the dhcp service writes the leases file again…

                                        1 Reply Last reply Reply Quote 0
                                        • K
                                          kevindd992002
                                          last edited by

                                          I'm experiencing the same problem with Unbound. Does this mean that it's normal for it to restart if the option to "Register DHCP leases in the DNS Resolver" is enabled?

                                          1 Reply Last reply Reply Quote 0
                                          • GertjanG
                                            Gertjan
                                            last edited by

                                            @wbond:

                                            edit: nevermind, changed another setting in dns resolver and now unbound is restarting at the same time the dhcp service writes the leases file again…

                                            I see the same thing: Unbound is restarting on every DHCPREQUEST - DHCPACK  sequence:
                                            Status: System logs: DHCP log:

                                            04-06-2015	09:49:36	Local7.Info	192.168.1.1	Apr  6 09:49:37 dhcpd: DHCPREQUEST for 192.168.2.235 from 78:3a:84:xx:34:1f (Philippes-Air) via sis0
04-06-2015	09:49:36	Local7.Info	192.168.1.1	Apr  6 09:49:37 dhcpd: DHCPACK on 192.168.2.235 to 78:3a:84:xx:34:1f (Philippes-Air) via sis0
04-06-2015	09:49:36	User.Info	192.168.1.1	Apr  6 09:49:37 dhcpleases: Sending HUP signal to dns daemon(53865)

                                            I guess, when "Sending HUP signal to dns daemon" is fired, Unbound restarts.
                                            At that moment, on the "Status: System logs: Resolver", I see (reversed time order):

                                            04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: start of service (unbound 1.5.3).
04-06-2015	09:52:08	Daemon.Notice	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] notice: init module 0: iterator
04-06-2015	09:52:08	Daemon.Notice	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] notice: Restart of unbound 1.5.3.
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.524288    1.000000 1
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.262144    0.524288 2
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.131072    0.262144 1
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: lower(secs) upper(secs) recursions
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: [25%]=0.262144 median[50%]=0.393216 [75%]=0.524288
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: histogram of recursion processing times
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: average recursion processing time 0.414164 sec
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: server stats for thread 1: requestlist max 4 avg 1 exceeded 0 jostled 0
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: server stats for thread 1: 4 queries, 0 answers from cache, 4 recursions, 0 prefetch
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.524288    1.000000 4
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.262144    0.524288 5
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.131072    0.262144 3
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.065536    0.131072 3
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.032768    0.065536 3
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info:    0.016384    0.032768 1
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: lower(secs) upper(secs) recursions
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: [25%]=0.08192 median[50%]=0.240299 [75%]=0.484966
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: histogram of recursion processing times
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: average recursion processing time 0.331678 sec
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: server stats for thread 0: requestlist max 28 avg 3.36842 exceeded 0 jostled 0
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: server stats for thread 0: 25 queries, 6 answers from cache, 19 recursions, 0 prefetch
04-06-2015	09:52:08	Daemon.Info	192.168.1.1	Apr  6 09:52:09 unbound: [53865:0] info: service stopped (unbound 1.5.3).

                                            This means that unbound restart several times per minute … is this normal ???
                                            Or is this what it is all about, the setting "DHCP Registration" on the "Services: DNS Resolver" page ?

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

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