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Report network latency issue

If you are experiencing some latency issue or non-ideal routing, please use our diagnostic tool to report it. The tool can run on your computer or router. It gathers and submit network measurements that will help us improve our network.

Please follow the instruction for your platform below:

MacOS, Linux, *BSD, Linux based routers

Open a terminal, run the following command and follow the instructions:

sh -c 'sh -c "$(curl -s https://nextdns.io/diag)"'

Windows

  1. Download and run this program.
  2. If you get a virus alert, you can disregard it, see note below.
  3. Follow the instructions

If you find bugs in the tool itself, please log an issues on the Github repository.

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  • Having issues from Orange France FTTH to netbarista-par-1.

    Like
    • Stanislas please send a diag

      Like
      • Stanislas
      • Stanislas
      • 3 wk ago
      • Reported - view

      Olivier Poitrey I would like to, but it's stuck on a traceroute 😟 (like https://github.com/nextdns/diag/issues/3)

      Like
      • Stanislas
      • Stanislas
      • 3 wk ago
      • Reported - view

      Olivier Poitrey Okay, it worked from another device: https://nextdns.io/diag/73ccd2c0-89d3-11eb-9842-b351f7e87eda

      However I have been getting less packet loss for half an hour. I should try a diag again when it's back.

      Like
    • Stanislas are you also monitoring some other providers to rule out an issue with your own connection?

      Like
      • Stanislas
      • Stanislas
      • 3 wk ago
      • Reported - view

      Olivier Poitrey I do have other smokeping probes that do not display any loss: https://imgur.com/a/Tv1S8yZ

      Like
    • Stanislas is it better now?

      Like
      • Stanislas
      • Stanislas
      • 3 wk ago
      • 1
      • Reported - view

      Olivier Poitrey It seems to be better (so far)

      I had some latency spikes last night without loss, during which I run a mtr (ipv6):
       

       Host                                                          Loss%   Snt   Last   Avg  Best  Wrst StDev
       1. livebox.home                                                0.0%   156    1.0   1.2   0.9   5.9   0.6
       2. xxx.ipv6.abo.wanadoo.fr                                     0.0%   155    2.6   2.6   1.5  11.4   1.2
       3. 2a01:cfc4::b                                                0.0%   155    3.7   4.2   2.4  67.0   6.1
       4. bundle-ether104.pastr4.paris.opentransit.net               98.7%   155    3.4   3.0   2.6   3.4   0.6
       5. ae-26.r04.parsfr01.fr.bb.gin.ntt.net                        0.0%   155   26.8  29.3  24.0  53.1   3.2
       6. xe-0-6-0-2-1.r04.parsfr01.fr.ce.gin.ntt.net                 0.0%   155   28.1  31.0  23.2  88.6  10.1
       7. dns.nextdns.io                                              0.0%   155   29.0  28.3  22.7  38.2   2.1
      

      We'll see how it will evolve in the next few days 🙂

      Like 1
  • Ultra low for IPv6 is not working. And routing anycast 1 was too slow. Please check it! Thank you!

    Anycast 1 connet to zepto-mad https://nextdns.io/diag/25f81500-8de3-11eb-8a6e-3fd26ddfe68f

    Anycast 1 connect to zepto-hkg https://nextdns.io/diag/fde2bd80-8de3-11eb-8a6e-3fd26ddfe68f

    Like
      • BigDargon
      • BigDargon
      • 4 days ago
      • Reported - view

      Olivier Poitrey please check this issues, IPv6 cannot work!

        greencloud-han (IPv6)    28 ms
      ■ greencloud-han           31 ms  (ultralow2)
        anexia-han               35 ms  (ultralow1)
        vultr-sin                50 ms
        premiumrdp-bkk           58 ms
        zepto-hkg (IPv6)         61 ms  (anycast1)
        anexia-sin (IPv6)        62 ms
        serverwala-kul           62 ms
        premiumrdp-kul           64 ms
        bangmod-bkk              67 ms
        vultr-sin (IPv6)         73 ms
        zepto-sin                76 ms
        zepto-sin (IPv6)         90 ms
        gsl-sin                 102 ms
        vultr-tyo (IPv6)        102 ms  (anycast2)
        anexia-sin              111 ms
        anexia-hkg              187 ms  (anycast2)
        zepto-mad               192 ms  (anycast1)
        gsl-sin (IPv6)           error
        dns1.nextdns.io (IPv6) error (ultralow1)
        dns2.nextdns.io (IPv6) error (ultralow2)
      
      Like
  • Hello support team,

    I am facing network performance issues (especially in Multiplayer Online Games and with Audio / Video Streaming (e.g. Amazon Prime / Apple Music or Video). I am using a Peplink Balance Router with 2 WAN internet providers (Telekom DSL and Vodafone LTE) to gain enough speed at our countryside region in south-west of Germany close to the French border (slow bandwith region far away from bigger cities).  I am unsing 2 different nextdns-Profiles for every of the lines (having a separate dyndns address each).

    Can the problem maybe have todo with my location, as Nextdns seems to connect to DNS Servers at France insteand of German servers?

    I would appreciate, if you could please review the following logs.

    Diagnose results using Telekom: https://nextdns.io/diag/ba295220-93a1-11eb-ac31-f10bbd007106

    Diagnose results using Vodafone: https://nextdns.io/diag/ea674920-93a0-11eb-ac31-f10bbd007106

    Something I can do?

    Kind regards,

    ChrisK

    Like
    • ChrisK fra is Frankfurt, not France.

      Like 1
    • ChrisK is it different if you are using your ISP resolver?

      Like 2
      • ChrisK
      • ChrisK
      • 10 days ago
      • 1
      • Reported - view

      Olivier Poitrey : Thanks for explanation.

      Yes, when I activate my 2 provider‘s DNS servers (DHCP Auto Assign by providers router) or manually assign CloudFlare DNs Servers, I am not facing any issues.

      Like 1
    • ChrisK do you have ECS enabled in the settings?

      Like 1
      • ChrisK
      • ChrisK
      • 10 days ago
      • 1
      • Reported - view

      Olivier Poitrey : Salut Olivier, yes, EDNS-Client Subnet is active.

      Like 1
    • ChrisK please try without it. Also, if you are able to identify the hostname that is getting slower, it would be helpful. You can check the logs when you use the game and try pinging them with and without nextdns to see if there is a latency difference.

      Like 2
      • ChrisK
      • ChrisK
      • 9 days ago
      • 1
      • Reported - view

      Olivier Poitrey : Ok, to disable anonymous content provider network  (ECS) setting helped a lot with Multiplayer Game performance. Thank you.

      Like 1
      • ChrisK
      • ChrisK
      • 9 days ago
      • 1
      • Reported - view

      Olivier Poitrey : removed cache boosting and cname flattening. Seems to have increased speed further. Will upload new diags later. Hapyy Easter!

      Like 1
      • ChrisK
      • ChrisK
      • 9 days ago
      • 1
      • Reported - view

       After the config change as described above, I receive this diagnose results (seems to be faster :-)):

      1) using Telekom DSL: https://nextdns.io/diag/120d10a0-953a-11eb-bc22-135c805ca4b6

      2) using Vodafone LTE: https://nextdns.io/diag/31a6b4b0-953b-11eb-bc22-135c805ca4b6

      Thanks for your kind help!

      Like 1
      • ChrisK
      • ChrisK
      • 8 days ago
      • 2
      • Reported - view

      What is the technical reason that disabling ECS, cacheboosting and cname flattening boosts the speed? 

      Like 2
      • ChrisK
      • ChrisK
      • 2 days ago
      • Reported - view

      Olivier Poitrey : Do you maybe have any explanation for that?

      Like
  • My IPv6 messed up, route to edgeuno-sao (332 ms). Please help!!!

    NextDNS Network Diagnostic

    Like
  • Hello!

    I’m having issues getting the closest server. Keeps on going to zepto-sin and is fixed if I restart the service or router (CLI on ASUS router). 
     

    Diag: https://nextdns.io/diag/ab11bbe0-9b05-11eb-a929-d7a42f8e7e37

    Like
  • Anycast DNS from Barcelona go to Paris instead of Madrid.
    
    https://nextdns.io/diag/658b7400-9bc6-11eb-918a-cd7214b075cd
    
      1.|-- 192.168.1.1                                                    0.0%    10    4.6   6.0   4.6   9.4   1.9
      2.|-- 235.red-81-46-38.customer.static.ccgg.telefonica.net           0.0%    10    6.6   8.5   6.1  19.0   4.3
      3.|-- 137.red-81-46-45.customer.static.ccgg.telefonica.net           0.0%    10    6.7   8.6   6.7  16.0   2.8
      4.|-- 245.red-81-46-45.customer.static.ccgg.telefonica.net           0.0%    10    7.8  14.3   6.9  26.3   7.4
      5.|-- 46.red-80-58-81.staticip.rima-tde.net                          0.0%    10    6.4   7.3   6.4  12.0   1.7
      6.|-- 213.140.50.204                                                 0.0%    10    7.3   7.2   6.8   7.7   0.3
      7.|-- et0-0-11-0-grtpareq3.net.telefonicaglobalsolutions.com         0.0%    10   24.9  28.3  24.8  41.2   5.2
      8.|-- rima-14-0-0-0-400-grtmadde2.net.telefonicaglobalsolutions.com  0.0%    10   28.8  34.4  28.6  83.7  17.3
      9.|-- lag-pa3-1.th2-1.rt.hopus.net                                   0.0%    10   23.7  25.0  23.7  32.6   2.7
     10.|-- ???                                                           100.0    10    0.0   0.0   0.0   0.0   0.0
     11.|-- ???                                                           100.0    10    0.0   0.0   0.0   0.0   0.0
     12.|-- ???                                                           100.0    10    0.0   0.0   0.0   0.0   0.0
     13.|-- edge01.pa2.par.netbarista.com                                  0.0%    10   24.3  24.9  24.0  30.3   1.9
     14.|-- dns1.nextdns.io                                                0.0%    10   24.6  25.9  24.5  35.3   3.3
    
      1.|-- 192.168.1.1                                                    0.0%    10    5.1   4.9   4.4   5.5   0.3
      2.|-- 235.red-81-46-38.customer.static.ccgg.telefonica.net           0.0%    10    6.2   6.6   5.8   8.8   0.9
      3.|-- 137.red-81-46-45.customer.static.ccgg.telefonica.net           0.0%    10    6.7   9.9   6.6  19.2   4.5
      4.|-- 245.red-81-46-45.customer.static.ccgg.telefonica.net           0.0%    10    6.8  10.8   6.4  34.8   8.9
      5.|-- 46.red-80-58-81.staticip.rima-tde.net                          0.0%    10    6.6   8.0   6.5  18.6   3.8
      6.|-- 213.140.50.204                                                 0.0%    10    6.9   7.3   6.8   8.2   0.5
      7.|-- 213.140.33.59                                                  0.0%    10   23.8  28.0  23.8  52.6   8.7
      8.|-- rima-14-0-0-0-400-grtmadde2.net.telefonicaglobalsolutions.com  0.0%    10   28.5  28.5  28.2  29.0   0.2
      9.|-- lag-pa3-1.th2-1.rt.hopus.net                                   0.0%    10   40.2  27.3  23.4  42.5   7.4
     10.|-- ???                                                           100.0    10    0.0   0.0   0.0   0.0   0.0
     11.|-- vlan6.core02.par01.fr.virtua.systems                           0.0%    10   37.0  37.1  36.7  37.5   0.2
     12.|-- dns2.nextdns.io                                                0.0%    10   37.6  39.3  36.4  55.7   6.0
    
    Like