Conditional Default Route with IP SLA in OSPF

R1(config)#ip sla 1

R1(config-ip-sla)#icmp-echo x.x.x.x

R1(config-ip-sla)#frequency y

R1(config-ip-sla)#ip sla schedule 1 life forever start-time now

R1(config)#exit

R1(config)#track 1 ip sla 1

R1(config)# ip prefix-list TRACK_DUMMY permit 1.0.0.1/32

R1(config)#route-map TRACK IPSLA

R1(config-route-map)#match ip add prefix-list TRACK_DUMMY

R1(config)#router ospf 1

R1(config-router)#default-information originate always route-map TRACK_IPSLA