Internal DNS does not work under Windows Server 2022 since version 25.0.0 #47370
Description
Description
Internal DNS does not work on windows server 2022. Pinging one container from another container in the default nat network fails in all versions after 25.0.0 but works in 24.0.9.
Reproduce
Step 1.
Run the following test bat file under versions 25.0.0 or later:
docker kill container1
docker kill container2
docker rm -v container1
docker rm -v container2
docker run -dit --name container1 --network nat mcr.microsoft.com/dotnet/framework/runtime:4.8 cmd
docker run -it --name container2 --network nat mcr.microsoft.com/dotnet/framework/runtime:4.8 cmd
You will be at the cmd prompt of container2.
Step 2.
At the command prompt of container2 run the following command:
Microsoft Windows [Version 10.0.20348.2227]
(c) Microsoft Corporation. All rights reserved.
C:\>ping container1
Ping request could not find host container1. Please check the name and try again.
C:\>exit
c:\tmp>docker -v
Docker version 25.0.0, build e758fe5
Expected behavior
Expected behavior at the command prompt of container2 in any version before version 25.0.0:
Microsoft Windows [Version 10.0.20348.2227]
(c) Microsoft Corporation. All rights reserved.
C:\>ping container1
Pinging container1 [172.28.57.12] with 32 bytes of data:
Reply from 172.28.57.12: bytes=32 time<1ms TTL=128
Reply from 172.28.57.12: bytes=32 time<1ms TTL=128
Reply from 172.28.57.12: bytes=32 time<1ms TTL=128
Reply from 172.28.57.12: bytes=32 time<1ms TTL=128
Ping statistics for 172.28.57.12:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\>exit
c:\tmp>docker -v
Docker version 24.0.9, build 2936816
c:\tmp\2.13.0>
docker version
Client:
Version: 25.0.0
API version: 1.44
Go version: go1.21.6
Git commit: e758fe5
Built: Thu Jan 18 17:10:49 2024
OS/Arch: windows/amd64
Context: default
Server: Docker Engine - Community
Engine:
Version: 25.0.0
API version: 1.44 (minimum version 1.24)
Go version: go1.21.6
Git commit: 615dfdf
Built: Thu Jan 18 17:09:34 2024
OS/Arch: windows/amd64
Experimental: falsedocker info
Client:
Version: 25.0.0
Context: default
Debug Mode: false
Plugins:
app: Docker App (Docker Inc.)
Version: v0.9.1-beta3
Path: C:\Program Files\Docker\cli-plugins\docker-app.exe
cluster: Manage Mirantis Container Cloud clusters (Mirantis Inc.)
Version: v1.9.0
Path: C:\Program Files\Docker\cli-plugins\docker-cluster.exe
registry: Manage Docker registries (Docker Inc.)
Version: 0.1.0
Path: C:\Program Files\Docker\cli-plugins\docker-registry.exe
Server:
Containers: 3
Running: 1
Paused: 0
Stopped: 2
Images: 132
Server Version: 25.0.0
Storage Driver: windowsfilter
Windows:
Logging Driver: json-file
Plugins:
Volume: local
Network: ics internal l2bridge l2tunnel nat null overlay private transparent
Log: awslogs etwlogs fluentd gcplogs gelf json-file local splunk syslog
Swarm: inactive
Default Isolation: process
Kernel Version: 10.0 20348 (20348.1.amd64fre.fe_release.210507-1500)
Operating System: Microsoft Windows Server Version 21H2 (OS Build 20348.2227)
OSType: windows
Architecture: x86_64
CPUs: 2
Total Memory: 9.999GiB
Name: WIN-78M43QMJ96T
ID: e38ac0ca-1d61-4aa0-b4d5-c151c3093f0d
Docker Root Dir: C:\ProgramData\docker
Debug Mode: false
Username: senetas
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community EngineAdditional Info
This has not been tested on Windows Server 2019