OSPF over Broadcast Media
A little question about duplicate router-id,
suppose that instead of using 2 areas, Area67 and Area79, we have only area0, but we hardcore assigned R6 with a router-id of 0.0.0.9,
and did the same for R9, i.e. a router-id of 0.0.0.9 the same as for R6.
Since we are using a duplicate router-ids on R6, and R9,
how does none check that there is a dublicate router id in the same area0, in this case,
say, using debugs.