Configuration guidelines
Follow these guidelines when you configure an IPv6 manual tunnel:
After a tunnel interface is deleted, all the features configured on the tunnel interface will be deleted.
Specify public addresses or interfaces as the source and destination addresses or interfaces.
To encapsulate and forward IPv6 packets whose destination address does not belong to the subnet where the current tunnel interface resides, you must configure a static route or dynamic routing for forwarding those packets through this tunnel interface. If you configure a static route to that destination IPv6 address, specify this tunnel interface as the outbound interface, or the peer tunnel interface address as the next hop. A similar configuration is required at the other tunnel end. If you configure dynamic routing at both ends, enable the dynamic routing protocol on both tunnel interfaces. For the detailed configuration, see Layer 3—IP Routing Configuration Guide.