Caution: When the routing table lookup for a source address contains an ECMP route, the router returns a list of interfaces for multiple next-hops. One of the interfaces in this list must match the interface on which the packet arrived or the router drops the packet. If the ECMP route uses indirect next-hops, the returned list of interfaces does not include interfaces that are reachable by those indirect next-hops. For example, if a packet arrives on an interface with source address validation enabled, and the interface is represented only by an indirect next-hop, a match for that interface does not appear in the list of interfaces from the routing table lookup. The router drops the packet.

• You must configure an IPv6 license using the license ipv6 command before using the IPv6 routing protocol configuration commands on the E Series router.
• All IPv6 routing protocol configurations are removed from the virtual router when you issue the no ipv6 command.