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@@ -759,6 +759,12 @@ Create a 3rd container using the new --ipc=container:CONTAINERID option, now it
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## Linking Containers
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+> **Note**: This section describes linking between containers on the
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+> default (bridge) network, also known as "legacy links". Using `--link`
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+> on user-defined networks uses the DNS-based discovery, which does not add
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+> entries to `/etc/hosts`, and does not set environment variables for
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+> discovery.
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+
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The link feature allows multiple containers to communicate with each other. For
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example, a container whose Dockerfile has exposed port 80 can be run and named
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as follows:
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