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Swarm availability issues

Hi,
I’m learning about Swarm now and installed 4 dockers on CentOS.
The Swarm advertise-addr and listen-addr are 192.168.63.129
This IP is of the one of the nodes obviously.
If this node goes down, the IP is not available.
How does the rest of the workers participate in the availability?
I thought that the IP is floating as virtual IP.
What am I missing? :neutral_face:
Thanks is advance!

Server:
Containers: 2
Running: 2
Paused: 0
Stopped: 0
Images: 3
Server Version: 19.03.1
Storage Driver: overlay2
Backing Filesystem: xfs

Swarm: active
NodeID: y116fk863un59hbt1a3jgjkff
Is Manager: true
ClusterID: oeq90xr1eqpcu4hjxuad7372v
Managers: 3
Nodes: 4
Default Address Pool: 10.0.0.0/8
SubnetSize: 24
Data Path Port: 4789

Nodes:
docker-01 is the leader and the node that holds the advertising and listening IP 192.168.63.129

ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
chdnf94albmyvrukq2iwzr8au docker-01 Ready Active Leader 19.03.1
xaiorqlf2ro4d5y7s2cr64nc0 docker-02 Ready Active Reachable 19.03.1
y116fk863un59hbt1a3jgjkff * docker-03 Ready Active Reachable 19.03.1
hr0bm3yxxg8vtakivzv8a9suj docker-04 Ready Active 19.03.1