FRR is a little weird, it doesn’t filter out self-originated LSAs, so the route will show as both connected and OSPF. Example:
vyos@vyos# run show ip route | match 10.0.0.1
O 10.0.0.1/32 [110/1] via 0.0.0.0, dum0 onlink, weight 1, 00:26:49
C>* 10.0.0.1/32 is directly connected, dum0, 1d14h44m