RIP does not advertise subnet 172.16.1.144/28. To remedy this problem, a static route is entered to that subnet but with a 27-bit mask. Because the mask references RTB's E0 interface, it is redistributed into RIP automatically.
interface Ethernet0
ip address 172.16.1.146 255.255.255.240
ipv6 address 2001:db8:0:190::2/64
ipv6 ospf 1 area 0
!
interface Ethernet1
ip address 172.16.1.98 255.255.255.224
ipv6 address 2001:db8:0:160::2/64
ipv6 rip ripdomain enable
!
router ospf 1
redistribute rip metric 50 subnets
network 172.16.1.0 0.0.0.255 area 0
!
router rip
redistribute ospf 1 metric 2
passive-interface Ethernet0
network 172.16.0.0
!
ipv6 router rip ripdomain
redistribute ospf 1 metric 2
ipv6 router ospf
redistribute rip ripdomain metric 50
ip classless
ip route 172.16.1.128 255.255.255.224 Ethernet0
| 
