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We have just found out that it is not possible to communicate between the containers using either the

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names or host names in default broker network.

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And now let me show you how we able to lease the default networks that are created in Tokyo by default

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and how you are able to create custom network.

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Let's do that.

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Let's go to this.

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The last step probably.

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And here let's clear terminal and here and circumvent Docker network.

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There's less help and you'll see a small list of options you are able to use with Docker network command

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network is basically management Docker command.

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And here you're able to list networks using as you are able to inspect read the details about specific

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network or you're able to create new network.

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Also you're able to use connect and disconnect commands in order to connect and disconnect the run in

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containers of top containers from specific networks.

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Great.

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Let's first use Docker network allows command in order to list existing network Docker network Alice.

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And I see here three networks on the list.

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And here in the thrust column you'll see it.

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Network idea here here and here also you see here.

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Network names breach host and none.

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And also you'll see it dry Ross breach host and now great.

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But I will explain you at the moment.

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What host and not networks do.

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I'll focus only on the bridge network.

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Let me know inspect.

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Read the dailies about this breach network.

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For that let's type Docker network inspect and here type breach or you're able to use a d of that network.

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And here you'll see the tales about default breach network.

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Let me scroll up to the beginning of this output.

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And most important part is here subnet it is set to 172 17 0 0 slash 16.

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Sixteen is network mask.

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It means that this part will be the same for all containers that are running in default breach network

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and basically when containers are created Docker hosted a science IP addresses two containers from this

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network range.

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They're also address 172 17 0 1 is default gateway arduous it is assigned to Docker host itself and

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containers get addresses next.

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After this first one for example we saw here that the busy box a one container got this address and

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the busy bookstore got address this one next after this one.

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It means that the docker or simply assigns to new container next free a badass from this range.

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This range also in those details about this breach network you might see which containers are currently

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created in this network.

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Here is container section and you'll see here now two containers Busy Box one here was its name.

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Also you see here mac address of this container.

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It is also created randomly.

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And here is a was assigned to this container.

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If you scroll down you'll see the tails about second container.

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Here they are here.

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It's a name busy bookstore.

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And here was a B version of four address assigned to this second container.

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And you may notice that MAC address also D for us.

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And here you see basically two different MAC addresses because MAC addresses must be unique at least

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across the same network those containers are in the same network.

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That's why Mike addresses must be also different.

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Great.

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This current set up in default breach network.

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Now let me show you how you're able to create new custom network using Docker network command.

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But let's do that next by mail.