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50ms difference between IPv4 and IPv6 connection on the same region server

Hello! I have a problem to report: in the northeast region of Brazil, nextdns has 2 low-latency servers located in Fortaleza, CE. The problem is that the server configured for IPv4 has a latency below 25ms, in IPv6 it is giving 50ms more latency.

 Would you be able to fix this or is it something that is out of your reach and restricted to my ISP? Thanks in advance!

 

Client
ASN: AS28573 CLARO S.A.
Country: BR
Has IPv6: true
Created: 2021-07-18T04:17:58.000Z

 

IPv4 

Primary: edgeuno-for (29 ms)
  210.12.128.111 ms12 ms9 ms
  3bb400027.virtua.com.br (187.64.0.39)11 ms9 ms9 msAS28573 CLARO S.A.
  4bb400064.virtua.com.br (187.64.0.100)10 ms17 ms12 msAS28573 CLARO S.A.
  5embratel-T0-0-0-0-uacc02.flajn.embratel.net.br (187.28.14.5)22 ms21 ms21 msAS4230 CLARO S.A.
  6ebt-P1-2-4-core01.fla.embratel.net.br (200.244.212.97)20 ms22 ms21 msAS4230 CLARO S.A.
  7200.244.81.222 ms21 ms23 msAS4230 CLARO S.A.
  84.68.39.2524 ms37 ms22 msAS3356 LEVEL3
  98.243.52.4622 ms21 ms21 msAS3356 LEVEL3
  10dns.nextdns.io (200.25.36.70)22 ms22 ms21 msAS7195 EDGEUNO SAS

  IPv6 

Primary IPv6: edgeuno-for (75 ms)
  2****
  32804:14c:da00:b8::110 ms9 ms9 msAS28573 CLARO S.A.
  42804:14c:da00:1601:ab::113 ms10 ms9 msAS28573 CLARO S.A.
  52804:a8:2:a2::33121 ms21 ms22 msAS4230 CLARO S.A.
  6****
  72804:a8:2:b8::56d283 ms77 ms87 msAS4230 CLARO S.A.
  8lo0.0.edge1.for1.as7195.net (2800:1e0:1080::1)67 ms67 ms67 msAS7195 EDGEUNO SAS
  9dns.nextdns.io (2800:1e0:1080:1::6)71 ms69 ms66 msAS7195 EDGEUNO SAS

 

NextDNS Network Diagnostic

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  • The latency seems to be happening from inside your ISP network.

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