R1(config)# ipv6 route ::/0 2001:db8:acad:2::2
R1(config)# ipv6 route ::/0 2001:db8:feed:10::2 5
The show ipv6 route output verifies that the default routes to R2 are installed in the routing table
Note that the IPv4 floating static route to R3 is not present in the routing table