Restrictions and guidelines
When you perform tasks in this section, follow these restrictions and guidelines:
The tunnel destination address specified on the local device must be identical with the tunnel source address specified on the tunnel peer device.
Do not specify the same tunnel source and destination addresses for the tunnel interfaces in the same mode on a device.
To ensure correct packet forwarding, identify whether the destination IPv6 network and the IPv6 address of the local tunnel interface are on the same subnet. If they are not, configure a route reaching the destination IPv6 network through the tunnel interface. You can configure the route by using one of the following methods:
Configure a static route, and specify the local tunnel interface as the egress interface or specify the IPv6 address of the peer tunnel interface as the next hop.
Enable IPv6 BGP on both the local and remote tunnel interfaces.
For more information about route configuration, see Layer 3—IP Routing Configuration Guide..