AdguardTeam / AdGuardDNS

Public DNS resolver that protects you from ad trackers
https://adguard-dns.io/
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Suboptimal routing from Stockholm to Frankfurt #698

Closed 0x9fff00 closed 9 months ago

0x9fff00 commented 10 months ago

Platform

Linux

Protocol

DNS-over-HTTPS

Do you use AdGuard app?

No I don't

Your configuration

No response

Traceroute to AdGuard DNS

traceroute to 94.140.14.14 (94.140.14.14), 30 hops max, 60 byte packets
 1  10.0.1.1 (10.0.1.1)  0.398 ms  0.266 ms  0.244 ms
 2  gw13.A465.priv.bahnhof.se (217.31.190.1)  1.418 ms  1.388 ms  1.276 ms
 3  172.18.65.40 (172.18.65.40)  4.270 ms  4.350 ms 172.18.65.38 (172.18.65.38)  4.521 ms
 4  * * *
 5  a465-gw-c.bahnhof.net (46.59.118.215)  6.016 ms  5.965 ms  5.882 ms
 6  a465-gw.bahnhof.net (46.59.118.214)  1.373 ms  2.294 ms  2.340 ms
 7  sto-cr3.sto-cr1.bahnhof.net (46.59.112.158)  2.971 ms  3.044 ms  2.641 ms
 8  sto5-er1.se.bahnhof.net (85.24.220.18)  2.581 ms 85.24.220.17 (85.24.220.17)  2.113 ms  2.062 ms
 9  xe-2-0-7-0.sth10.core-backbone.com (194.68.128.117)  2.362 ms netnod-ix-ge-a-sth-1500.core-backbone.com (194.68.123.117)  2.397 ms  2.349 ms
10  ae13-2081.fra10.core-backbone.com (80.255.14.193)  22.037 ms  21.958 ms  21.836 ms
11  coreb-fra.cdn77.com (169.150.195.68)  26.142 ms  25.741 ms  25.734 ms
12  vl217.fra-cyx2-dist-2.cdn77.com (169.150.194.51)  26.087 ms vl215.fra-cyx2-dist-1.cdn77.com (169.150.194.49)  26.261 ms vl217.fra-cyx2-dist-2.cdn77.com (169.150.194.51)  26.087 ms
13  dns.adguard.com (94.140.14.14)  26.307 ms  26.079 ms  26.026 ms

Issue Details

I'm in Stockholm and used to be routed to the Stockholm server but recently (for at least a few weeks) I've been routed to Frankfurt instead.

Expected Behavior

I should be routed to Stockholm

Actual Behavior

I'm being routed to Frankfurt (dns2-dp-fra-5)

Screenshots

No response

Additional Information

It seems like there is a route to the Frankfurt server (via Core-Backbone) on the Netnod Stockholm IX but no route to the Stockholm server, so my ISP (Bahnhof) prefers the peering route to Frankfurt over transit to Stockholm.

D13410N3 commented 9 months ago

Hello. As you have mentioned earlier, it depends on your ISP, which has transit via CBB. CBB prefers its own backbone. Anyway, you have good results and it shouldn't affect you much