Docker overlay DNS cant resolve Container Name

I have 2 Docker Hosts with identical Docker Version and Configs. Since yesterday i have a Problem with the Overlay Networks on one of the Hosts. What i did:

docker network create -d overlay --attachable test_network
docker run --rm -it --network=“test_network” --name bash

On One Host the response is as expected:

bash-4.4# wget
Connecting to (
wget: can’t connect to remote host ( Connection refused
On the other the response is:
bash-4.4# wget
wget: bad address ‘’

I have no idea where this could come from. And would be very happy for ideas.

There the output from docker info (identical on both machines):
Containers: 3
Running: 2
Paused: 0
Stopped: 1
Images: 156
Server Version: 18.03.0-ce
Storage Driver: devicemapper
Pool Name: vg01-docker–pool
Pool Blocksize: 524.3kB
Base Device Size: 10.74GB
Backing Filesystem: xfs
Udev Sync Supported: true
Data Space Used: 22.89GB
Data Space Total: 42.95GB
Data Space Available: 20.06GB
Metadata Space Used: 6.922MB
Metadata Space Total: 5.583GB
Metadata Space Available: 5.576GB
Thin Pool Minimum Free Space: 4.295GB
Deferred Removal Enabled: true
Deferred Deletion Enabled: true
Deferred Deleted Device Count: 0
Library Version: 1.02.140-RHEL7 (2017-05-03)
Logging Driver: json-file
Cgroup Driver: cgroupfs
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: active
NodeID: m99xj3rhtk8ymabv1k78v4pur
Is Manager: true
ClusterID: of2g9dy3xbwj2jye6potfq5dq
Managers: 1
Nodes: 2
Task History Retention Limit: 5
Snapshot Interval: 10000
Number of Old Snapshots to Retain: 0
Heartbeat Tick: 1
Election Tick: 3
Heartbeat Period: 5 seconds
CA Configuration:
Expiry Duration: 3 months
Force Rotate: 0
Autolock Managers: false
Root Rotation In Progress: false
Node Address:
Manager Addresses:
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: cfd04396dc68220d1cecbe686a6cc3aa5ce3667c
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: 949e6fa
Security Options:
Profile: default
Kernel Version: 3.10.0-693.21.1.el7.x86_64
Operating System: Red Hat Enterprise Linux Server 7.4 (Maipo)
OSType: linux
Architecture: x86_64
CPUs: 12
Total Memory: 62.74GiB
Name: gtunxlvd04346
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Experimental: false
Insecure Registries:
Live Restore Enabled: false

Sorry, i didn’t see the second request.
I have a similar issue with the 18.03 version. Could you upgrade to 18.03.1??

thanks for the quick feedback, we restartet the Host with the Problem and now it is working as expected.

So this Problem can be solved with a restart of the Host.

It would still be interesting to find the cause of this, but i think that if there is no relation between researching this issue and the chance this happens again.

check this issue: