Backbone router shows one of its neigbors state as "init"

On the other router, there is nothing on the neighbor list.

What could be the cause to this ?

Is this two mikrotik routers? What is your network/ospf setup? Is this over wireless? NBMA neighbor??

These are 2 mikrotik routers.
Backbone router is running v4.5 and the other router is on 3.30 Routing test package.

They are connected by a switch(dump), and on the same switch there is another MT Router and its working just fine.

/routing ospf instance
set default comment="" disabled=no distribute-default=always-as-type-2 \
in-filter=ospf-in metric-bgp=20 metric-connected=20 metric-default=1 \
metric-other-ospf=auto metric-rip=20 metric-static=20 name=default \
out-filter=ospf-out redistribute-bgp=no redistribute-connected=as-type-2 \
redistribute-other-ospf=no redistribute-rip=no redistribute-static=\
as-type-2 router-id=0.0.0.0
/routing ospf area
set backbone area-id=0.0.0.0 comment="" disabled=no instance=default name=\
backbone type=default
/routing ospf area range
add advertise=yes area=backbone comment="" cost=calculated disabled=yes \
range=0.0.0.0/0
/routing ospf network
add area=backbone comment="" disabled=no network=0.0.0.0/0
/routing ospf neighbor> pr
0 router-id=10.26.1.3 address=10.26.1.3 interface=Sector1 priority=1
dr-address=10.26.1.3 backup-dr-address=0.0.0.0 state="Init"
state-changes=1 ls-retransmits=0 ls-requests=0 db-summaries=0

1 router-id=10.4.1.2 address=10.4.1.2 interface=Sector2 priority=1
dr-address=10.4.1.2 backup-dr-address=10.4.1.1 state="Full"
state-changes=218 ls-retransmits=0 ls-requests=0 db-summaries=0
adjacency=55m48s

2 router-id=10.5.2.1 address=10.5.1.2 interface=ether7 priority=1
dr-address=10.5.1.2 backup-dr-address=10.5.1.1 state="Full"
state-changes=5 ls-retransmits=0 ls-requests=0 db-summaries=0
adjacency=2d2h51m

3 router-id=10.3.1.2 address=10.3.1.2 interface=Bar priority=1
dr-address=10.3.1.2 backup-dr-address=10.3.1.1 state="Full"
state-changes=5 ls-retransmits=0 ls-requests=0 db-summaries=0
adjacency=2d2h51m1s

4 router-id=10.1.1.2 address=10.1.1.2 interface=yol priority=1
dr-address=10.1.1.2 backup-dr-address=10.1.1.1 state="Full"
state-changes=5 ls-retransmits=0 ls-requests=0 db-summaries=0

set default comment="" disabled=no distribute-default=always-as-type-2 \
in-filter=ospf-in metric-bgp=20 metric-connected=20 metric-default=1 \
metric-other-ospf=auto metric-rip=20 metric-static=20 name=default \
out-filter=ospf-out redistribute-bgp=no redistribute-connected=as-type-2 \
redistribute-other-ospf=no redistribute-rip=no redistribute-static=\
as-type-2 router-id=0.0.0.0
/routing ospf area
set backbone area-id=0.0.0.0 disabled=no instance=default name=backbone type=\
default
/routing ospf network
add area=backbone disabled=no network=10.26.1.0/24

anyone ?

Check if there are any firewall rules in input or output chains that may block ospf.
Make sure that ospf connections are not nated.
Enable debug logs and check if neighbors are receiving ospf hello packets.

On the router where no neigbors are listed, I have the following line which may be interesting in the debug logs.

source x.x.x.x is an public IP address on the network where we NAT that routers Private IP range.

On the main backbone router, I have put rules already to not to NAT OSPF protocol.