To reproduce:
set vrf name red table 2000 set vrf name red protocols ospf interface eth1 area 0 set vrf name red protocols ospf parameters router-id 1.1.1.1 set interfaces ethernet eth1 vrf red commit
FRR now has an interface config
[email protected]# vtysh -c "show run" no-header | sed -n "/^interface eth1/,/!/p" interface eth1 ip ospf area 0 ip ospf dead-interval 40 exit
Now delete the interface from the OSPF process
delete vrf name red protocols ospf interface commit
It's still there
[email protected]# vtysh -c "show run" no-header | sed -n "/^interface eth1/,/!/p" interface eth1 ip ospf area 0 ip ospf dead-interval 40 exit !