19 lines
1.1 KiB
Markdown
19 lines
1.1 KiB
Markdown
**Purpose**:
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You may find that you only have one network adapter on a server / VM and need to have multiple virtual networks associated with it. For example, Home Assistant exists on the `192.168.3.0/24` network but it needs to also access devices on the `192.168.4.0/24` surveillance network. To facilitate this, we will make a MACVLAN Sub-Interface. This will make a virtual interface that is parented to the actual physical interface.
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!!! info "Assumptions"
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It is assumed that you are running Rocky Linux (or CentOS / RedHat).
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## Create the Permanent Interface
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You will begin with making a new interface, it will have the name `macvlan0`.
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``` sh
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nmcli connection add type macvlan ifname macvlan0 dev ens18 mode bridge ipv4.method manual ipv4.addresses 192.168.4.100/24
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nmcli connection up macvlan0
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nmcli connection show
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```
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## Bind a Docker Network to the Sub-Interface
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Now you need to run the following command to allow docker to use this interface for the `surveillance_network`
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``` sh
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docker network create -d macvlan --subnet=192.168.4.0/24 --gateway=192.168.4.1 -o parent=macvlan0 surveillance_network
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``` |