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Task #10238

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MJ NS

ipv6-only DNS setup is misleading and misconfigured

Task #10238: ipv6-only DNS setup is misleading and misconfigured

Added by Moris Jones about 4 years ago. Updated 5 months ago.

Status:
Waiting
Priority:
Low
Assignee:
Nico Schottelius
Target version:
agile - end-of-2024
Start date:
01/31/2022
Due date:
% Done:

0%

Estimated time:
PM Check date:

Description

https://redmine.ungleich.ch/issues/7496

Says that place5 and place6 should return ONLY AAAA records

But both of them, as well as every other ungleich DNS server I know of, return both A and AAAA records.

Most software today defaults to A records if they exist and only uses AAAA if they do not. Web browsers for example.

Furthermore, the following page says that by choosing place5 and place6 as DNS resolvers one can route almost all traffic through the VPN. But because they return A records, in practice this does not happen.

https://redmine.ungleich.ch/projects/open-infrastructure/wiki/Ungleich_IPv6_wireguard_VPN

NS Updated by Nico Schottelius about 4 years ago Actions
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 #1

  • Status changed from New to Closed

This is working as intended:

  • regular servers return both entries
  • The unbound DNS servers return IPv6 / AAAA only

MJ Updated by Moris Jones about 4 years ago Actions
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 #2

  • Status changed from Closed to Waiting

(devuan)<redacted>@<redacted>:~$ host datacenterlight.ch unbound1.place6.ungleich.ch
Using domain server:
Name: unbound1.place6.ungleich.ch
Address: 2a0a:e5c0:2:12:0:f0ff:fea9:c451#53
Aliases:

datacenterlight.ch has address 185.203.112.17
datacenterlight.ch has IPv6 address 2a0a:e5c0:0:2:400:b3ff:fe39:795c
datacenterlight.ch mail is handled by 10 smtp.ungleich.ch.

MJ Updated by Moris Jones about 4 years ago Actions
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 #3

nico@dcl$ dig A datacenterlight.ch @unbound1.place6.ungleich.ch

; <<>> DiG 9.16.22-Debian <<>> A datacenterlight.ch @unbound1.place6.ungleich.ch
;; global options: +cmd
;; Got answer:
;; >>HEADER<< opcode: QUERY, status: NOERROR, id: 62032
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

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

;; ANSWER SECTION:
datacenterlight.ch. 2213 IN A 185.203.112.17

;; Query time: 367 msec
;; SERVER: 2a0a:e5c0:2:12:0:f0ff:fea9:c451#53(2a0a:e5c0:2:12:0:f0ff:fea9:c451)
;; WHEN: Mon Jan 31 14:36:06 IST 2022
;; MSG SIZE rcvd: 63

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 #12

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  • Target version set to 2017-07

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