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Docker Overlay Network

The overlay driver builds one virtual network across multiple Docker hosts by giving each host a VXLAN tunnel endpoint and distributing the IP-to-host mapping through Swarm's control plane, so containers on different machines communicate as if on one bridge. Embedded DNS and virtual-IP load balancing ride on top for multi-host service discovery.

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The overlay driver builds one virtual network across multiple Docker hosts by giving each host a VXLAN tunnel endpoint and distributing the IP-to-host mapping through Swarm's control plane, so containers on different machines communicate as if on one bridge. Embedded DNS and virtual-IP load balancing ride on top for multi-host service discovery.

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