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The lower half is used by the Kontena Agent for statically allocated addresses used by infrastructure services such as etcd, and the upper half (`10.81.128.0 - 10.81.255.255`) is used for dynamically allocated service container addresses managed by the [Kontena IPAM](https://github.com/kontena/kontena-ipam).\n \n-### IP Address Management\n+Each Grid may also include a set of Trusted Subnets, which are used for the Overlay Networking between Host Node public and private IP addresses as described further below.\n \n-Overlay network addresses are allocated by the Kontena Master, which tracks each allocated overlay network address.\n-Using the default address allocation scheme, each Grid can contain up to 254 Host Nodes, and 8190 Service Containers.\n+### IP Address Management\n \n-When a Host Node's Kontena Agent is disconnected from the Kontena Master, the overlay network addresses used by the Node's Containers are released.\n-Released overlay network addresses may be used for new Service Containers being deployed.\n+Overlay network addresses are allocated by the [Kontena IPAM](https://github.com/kontena/kontena-ipam) service running on each host Node.\n+Using the default address allocation scheme, each Grid can contain up to 254 Host Nodes, and 32768 Service Containers.","path":"docs/core-concepts/networking.md","position":20,"original_position":20,"commit_id":"b7f5581883296f8070d4e6eb851dede1c39f91f0","original_commit_id":"b7f5581883296f8070d4e6eb851dede1c39f91f0","user":{"login":"jnummelin","id":3205505,"avatar_url":"https://avatars.githubusercontent.com/u/3205505?v=3","gravatar_id":"","url":"https://api.github.com/users/jnummelin","html_url":"https://github.com/jnummelin","followers_url":"https://api.github.com/users/jnummelin/followers","following_url":"https://api.github.com/users/jnummelin/following{/other_user}","gists_url":"https://api.github.com/users/jnummelin/gists{/gist_id}","starred_url":"https://api.github.com/users/jnummelin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jnummelin/subscriptions","organizations_url":"https://api.github.com/users/jnummelin/orgs","repos_url":"https://api.github.com/users/jnummelin/repos","events_url":"https://api.github.com/users/jnummelin/events{/privacy}","received_events_url":"https://api.github.com/users/jnummelin/received_events","type":"User","site_admin":false},"body":"True.","created_at":"2016-11-18T07:16:33Z","updated_at":"2016-11-18T07:16:33Z","html_url":"https://github.com/kontena/kontena/pull/1332#discussion_r88609218","pull_request_url":"https://api.github.com/repos/kontena/kontena/pulls/1332","_links":{"self":{"href":"https://api.github.com/repos/kontena/kontena/pulls/comments/88609218"},"html":{"href":"https://github.com/kontena/kontena/pull/1332#discussion_r88609218"},"pull_request":{"href":"https://api.github.com/repos/kontena/kontena/pulls/1332"}}},"pull_request":{"url":"https://api.github.com/repos/kontena/kontena/pulls/1332","id":93934257,"html_url":"https://github.com/kontena/kontena/pull/1332","diff_url":"https://github.com/kontena/kontena/pull/1332.diff","patch_url":"https://github.com/kontena/kontena/pull/1332.patch","issue_url":"https://api.github.com/repos/kontena/kontena/issues/1332","number":1332,"state":"open","locked":false,"title":"Update 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