What commands can be used to view the IPv6 property of the Tunnel interface

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View the Tunnel interface ipv6 property command is : display IPv6 interface tunnel interface-number

Other related questions:
Command used to check IPv6 attributes of the tunnel interface
The display ipv6 interface tunnel interface-number command is used to check IPv6 attributes of the tunnel interface.

Can Huawei APs use IPv4 or IPv6 addresses to establish tunnels with an AC
In versions earlier than V200R005C00, Huawei APs can only use IPv4 addresses to establish tunnels with the AC. In V200R005C00 and later versions, Huawei APs can use both IPv4 and IPv6 addresses to establish tunnels with the AC but can only use one type of address at one time.

IPv6 over IPv4 GRE tunnel configuration
To configure an IPv6 over IPv4 GRE tunnel, perform the following steps: 1. Run the system-view command to enter the system view. 2. Run the interface tunnel interface-number command to create a tunnel interface and enter the tunnel interface view. 3. Run the tunnel-protocol gre command to set the tunnel encapsulation type to GRE tunnel. 4. Run the source { ipv4-address | interface-type interface-number } command to specify the source address or source interface of the GRE tunnel. Note: ?You can directly specify the IPv4 address of the interface used to connect to the IPv4 network as the source address or specify this interface as the source interface. ?You can specify a physical port or a logical interface such as the Loopback interface as the source interface of the tunnel. 5. Run the destination ipv4-address command to specify the destination address or domain name of the GRE tunnel. The destination address is the source address of the peer device. As shown in Figure 1, the destination address of FW_A is 1.1.2.1/24, while the destination address of FW_B is 1.1.1.1/24. 6. Run the ipv6 enable command to enable the IPv6 function on the tunnel interface. 7. Run the ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length } command to configure the IPv6 address for the tunnel interface. 8. (Optional) Run the gre key key-number command to set the keyword in the GRE packet header. You can set the same key-number on both ends of the tunnel or do not set the key-number.

IPv6 over IPv4 automatic tunnel configuration
To configure an IPv6 over IPv4 automatic tunnel, perform the following steps: 1. Run the system-view command to enter the system view. 2. Run the interface tunnel interface-number command to create a tunnel interface and enter the tunnel interface view. 3. Run the tunnel-protocol ipv6-ipv4 auto-tunnel command to set the tunnel encapsulation type to automatic tunnel. 4. Run the source { ipv4-address | interface-type interface-number } command to specify the source address or source interface of the automatic tunnel. Note: ?You can directly specify the IPv4 address of the interface used to connect to the IPv4 network as the source address or specify this interface as the source interface. ?You can specify a physical port or a logical interface such as the Loopback interface as the source interface of the tunnel. ?Source addresses or source interfaces of different IPv6 over IPv4 automatic tunnels must be different. 5. Run the ipv6 enable command to enable the IPv6 function on the tunnel interface. 6. Run the ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length } command to set the tunnel interface address to an IPv6 address that is compatible with IPv4. The IPv6 address configured for the tunnel interface must be compatible with IPv4; that is, the most significant 96 bits are 0s, and the least significant 32 bits are the source address of the automatic tunnel or the IPv4 address of the source interface. The format is ::ipv4-address. As shown in Figure 1, the source address of the automatic tunnel of FW_A is 1.1.1.1/24, and the IPv6 address of the tunnel interface is ::1.1.1.1/96.

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