I have seen on some configurations where they route a network to Null0
I am not sure what is the reason…and that network will show up as directly connected on the routing table .
BB(config)#ip route 192.168.1.0 255.255.255.0 null 0
If I advertise the Network 192.168.1.0, on EIGRP to R2 then go to R2 , it will show up as learned through EIGRP
BB#sh ip route
S 192.168.1.0/24 is directly connected, Null0
R2#sh ip route
D 192.168.1.0/24 [90/2172416] via 10.1.2.3, 00:00:05, FastEthernet0/0