Docker 29.1.0 - DNS issues

Docker Engine General
,
1

Hello,

After upgrading to 29.1.0, containers no longer use the DNS settings from the host. I see this on multiple hosts.
I have to manually add per container:
service:
app:
dns:
- 1.1.1.1
- 1.0.0.1
Even setting the global DNS settings in daemon.json have no effect.

# docker version
Client: Docker Engine - Community
 Version:           29.1.0
 API version:       1.52
 Go version:        go1.25.4
 Git commit:        360952c
 Built:             Thu Nov 27 16:42:29 2025
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          29.1.0
  API version:      1.52 (minimum version 1.44)
  Go version:       go1.25.4
  Git commit:       710302e
  Built:            Thu Nov 27 16:42:29 2025
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v2.1.5
  GitCommit:        fcd43222d6b07379a4be9786bda52438f0dd16a1
 runc:
  Version:          1.3.3
  GitCommit:        v1.3.3-0-gd842d771
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

# cat /etc/docker/daemon.json
{
  "default-address-pools": [
    {
      "base": "172.16.0.0/12",
      "size": 24
    }
  ],
  "dns": ["1.1.1.1", "1.0.0.1"],
  "log-driver": "syslog",
  "log-opts": {
    "tag": "{{.Name}}"
  }
}

Please advice, thanks!

2

It seems there was a DNS issue indeed and a change was reverted and released as 29.1.1. Try upgrading and see if that fixes the issue.

Link to the release notes:

https://docs.docker.com/engine/release-notes/29/#2911

1 Like
3

Yep, upgrading to 29.1.1 fixed the issue. Thanks.

4

Thatā€™s great. Then please consider marking my post as solution by clicking on the gray "checkbox icon under the post, so it will be more obvious that the topic was solved.

1 Like
5

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