bip=CIDR – supply a specific IP address and netmask for the docker0 bridge, using standard CIDR notation like 192.168.1.5/24. These options are configurable at server startup: ![]() ![]() The host machine can both receive and send packets to containers connected to the bridge, and gives it an MTU – the maximum transmission unit or largest packet length that the interface will allow – of 1,500 bytes. Note: The Docker networks feature allows you to create user-defined networks in addition to the default bridge network.īy default, the Docker server creates and configures the host system’s docker0 interface as an Ethernet bridge inside the Linux kernel that can pass packets back and forth between other physical or virtual network interfaces so that they behave as a single Ethernet network.ĭocker configures docker0 with an IP address, netmask and IP allocation range. This is a bridge network named bridge created automatically when you install Docker. ![]() The information in this section explains how to customize the Docker default bridge.
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