binding tunnel ipv4-ipv6

Function

The binding tunnel ipv4-ipv6 command enables IPv4 over IPv6 on a Layer 3 interface.

The undo binding tunnel ipv4-ipv6 command disables IPv4 over IPv6 on a Layer 3 interface.

By default, IPv4 over IPv6 is disabled on a Layer 3 interface.

Format

binding tunnel ipv4-ipv6

undo binding tunnel ipv4-ipv6

Parameters

None

Views

Loopback interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
tunnel6	write

Usage Guidelines

Usage Scenario

After an IPv4 over IPv6 tunnel interface is created, you need to run the source command in the interface view to configure a source interface or a source IPv6 address for the tunnel interface. Then, run the binding tunnel ipv4-ipv6 command to enable IPv4 over IPv6 on the source interface or the interface to which the source IPv6 address belongs, so that packets can be transmitted from the source tunnel interface to the corresponding tunnel for processing.

Precautions

After IPv4 over IPv6 is enabled on an interface, the interface cannot be used for other services.
IPv4 over IPv6 and GRE are mutually exclusive.
IPv4 over IPv6 can only be enabled on one-dimensional tunnel interfaces. If a Layer 3 interface is specified as the source interface for a one-dimensional tunnel interface using the source command, you must enable IPv4 over IPv6 on the Layer 3 interface using the binding tunnel ipv4-ipv6 command. Otherwise, packets cannot be sent or received on the one-dimensional tunnel interface.

Example

# Configure the interface named LoopBack1 on the device and enable IPv4 over IPv6 on the interface.

<HUAWEI> system-view
[~HUAWEI] interface LoopBack 1
[*HUAWEI-LoopBack1] binding tunnel ipv4-ipv6