[GH-ISSUE #2336] [bug][selfhosted] - Local DNS resolution not possible when netbird client is working #4927

New Issue

saavagebueno · 2026-08-05T01:00:26-04:00

saavagebueno commented

2026-08-05 01:00:26 -04:00

Originally created by @rihards-simanovics on GitHub (Jul 26, 2024).
Original GitHub issue: https://github.com/netbirdio/netbird/issues/2336

Describe the problem

all DNS queries to 127.0.0.53:53 fail with a timeout. related to issue https://github.com/netbirdio/netbird/issues/2186

To Reproduce

Steps to reproduce the behavior:

spin up a VPS with Ubuntu Server 22.04.4 LTS
update all packages
install cli client
connect to the management server
attempt to run

Expected behavior

when running the nslookup on google.com this should come up:

Server:         127.0.0.53
Address:        127.0.0.53#53

Non-authoritative answer:
Name:   google.com
Address: <some ip closest to you>
Name:   google.com
Address: <some ip closest to you>

Actual Behaviour

All queries to root DNS fail with a timeout

nslookup localhost
;; communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
;; no servers could be reached

Are you using NetBird Cloud?

negative - all selfhosted.

NetBird managemnet server version: unknown - latest as of 26th july 24

NetBird client version: 0.28.6

NetBird status -d output:

OS: linux/amd64
Daemon version: 0.28.6
CLI version: 0.28.6
Management: Connected to https://vpn-server-domain.anon-CFOEs.domain:443
Signal: Connected to https://vpn-server-domain.anon-CFOEs.domain:443
Relays:
  [stun:vpn-server-domain.anon-CFOEs.domain:3478] is Unavailable, reason: dial: failed to listen: dial: dial udp: lookup vpn-server-domain.anon-CFOEs.domain on 127.0.0.53:53: read udp 127.0.0.1:40225->127.0.0.53:53: i/o timeout
  [turn:vpn-server-domain.anon-CFOEs.domain:3478?transport=udp] is Unavailable, reason: create client: lookup vpn-server-domain.anon-CFOEs.domain on 127.0.0.53:53: read udp 127.0.0.1:46372->127.0.0.53:53: i/o timeout
Nameservers:
  [127.0.0.53:53] for [.] is Available
  [8.8.8.8:53, 8.8.4.4:53] for [.] is Available
FQDN: gws-uk-1.netbird.selfhosted
NetBird IP: 100.90.79.155/16
Interface type: Kernel
Quantum resistance: false
Routes: -
Peers count: 2/4 Connected

Screenshots

no screenshots please see outputs above

Additional context

Running on Ubuntu Server 22.04.4 LTS, with Plesk Obsidian 18.0.62 Update #2 (Web Host Edition) and DNS BIND.

related to issue #2186

Originally created by @rihards-simanovics on GitHub (Jul 26, 2024). Original GitHub issue: https://github.com/netbirdio/netbird/issues/2336 **Describe the problem** all DNS queries to 127.0.0.53:53 fail with a timeout. related to issue https://github.com/netbirdio/netbird/issues/2186 **To Reproduce** Steps to reproduce the behavior: 1. spin up a VPS with Ubuntu Server 22.04.4 LTS 2. update all packages 3. install cli client 4. connect to the management server 5. attempt to run **Expected behavior** when running the nslookup on google.com this should come up: ``` Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: Name: google.com Address: <some ip closest to you> Name: google.com Address: <some ip closest to you> ``` **Actual Behaviour** All queries to root DNS fail with a timeout ``` nslookup localhost ;; communications error to 127.0.0.53#53: timed out ;; communications error to 127.0.0.53#53: timed out ;; communications error to 127.0.0.53#53: timed out ;; no servers could be reached ``` **Are you using NetBird Cloud?** negative - all selfhosted. NetBird managemnet server version: `unknown - latest as of 26th july 24` NetBird client version: `0.28.6` **NetBird status -d output:** ```log OS: linux/amd64 Daemon version: 0.28.6 CLI version: 0.28.6 Management: Connected to https://vpn-server-domain.anon-CFOEs.domain:443 Signal: Connected to https://vpn-server-domain.anon-CFOEs.domain:443 Relays: [stun:vpn-server-domain.anon-CFOEs.domain:3478] is Unavailable, reason: dial: failed to listen: dial: dial udp: lookup vpn-server-domain.anon-CFOEs.domain on 127.0.0.53:53: read udp 127.0.0.1:40225->127.0.0.53:53: i/o timeout [turn:vpn-server-domain.anon-CFOEs.domain:3478?transport=udp] is Unavailable, reason: create client: lookup vpn-server-domain.anon-CFOEs.domain on 127.0.0.53:53: read udp 127.0.0.1:46372->127.0.0.53:53: i/o timeout Nameservers: [127.0.0.53:53] for [.] is Available [8.8.8.8:53, 8.8.4.4:53] for [.] is Available FQDN: gws-uk-1.netbird.selfhosted NetBird IP: 100.90.79.155/16 Interface type: Kernel Quantum resistance: false Routes: - Peers count: 2/4 Connected ``` **Screenshots** `no screenshots please see outputs above` **Additional context** Running on `Ubuntu Server 22.04.4 LTS`, with `Plesk Obsidian 18.0.62 Update #2` (Web Host Edition) and DNS BIND. related to issue #2186

saavagebueno added the triage-needed label 2026-08-05 01:00:26 -04:00

saavagebueno referenced this issue

2026-08-05 01:22:41 -04:00

[GH-ISSUE #4927] Windows TUN Interfaces were destroyed #9576

saavagebueno referenced this issue

2026-08-05 01:24:46 -04:00

[GH-ISSUE #4927] Windows TUN Interfaces were destroyed #10134

saavagebueno referenced this issue

2026-08-05 01:25:42 -04:00

[GH-ISSUE #4927] Windows TUN Interfaces were destroyed #10383

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Reference: DYNR/netbird#4927