docker swarm node STATUS is Down after restart

[maxim-ge]

root@app-node-2 ~ # docker node ls
ID                            HOSTNAME     STATUS    AVAILABILITY   MANAGER STATUS   ENGINE VERSION
3ensvhywllruh9ifirlnicicm     app-node-1   Down      Active         Unreachable      20.10.23
t484aamiq1c3exzfs3xsvkqxm *   app-node-2   Ready     Active         Reachable        20.10.23
by1262uqxmo9wm3xsk1wqbn1w     db-node-1    Ready     Active         Leader           20.10.23
ubbkopa07b2mjcj1lt81e23th     db-node-2    Ready     Active         Reachable        20.10.23
sikl263xvji2gt45smba67r9i     db-node-3    Ready     Active         Reachable        20.10.23

Reason

• IP address has been changed after reboot

Context

• https://github.com/moby/moby/issues/34827
• https://stackoverflow.com/questions/44362258/swarm-node-status-down-but-node-should-be-ready
• https://forums.docker.com/t/docker-worker-nodes-shown-as-down-after-re-start/22329