Configuration procedure

To configure a 6to4 tunnel:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter 6to4 tunnel interface view.

interface tunnel number [ mode ipv6-ipv4 6to4 ]

N/A

3. Specify an IPv6 address for the tunnel interface.

See "Configuring basic IPv6 settings."

By default, no IPv6 address is configured for the tunnel interface.

4. Configure a source address or source interface for the tunnel interface.

source { ipv4-address | interface-type interface-number }

By default, no source address or source interface is configured for the tunnel interface.

If you specify a source address, it is used as the source IP address of tunneled packets.

If you specify a source interface, the primary IP address of this interface is used as the source IP address of tunneled packets.

5. (Optional.) Set the DF bit for tunneled packets.

tunnel dfbit enable

By default, the DF bit is not set for tunneled packets.

6. Return to system view.

quit

N/A

7. (Optional.) Enable dropping IPv6 packets that use IPv4-compatible IPv6 addresses.

tunnel discard ipv4-compatible-packet

By default, IPv6 packets that use IPv4-compatible IPv6 packets are not dropped.