[nsp] Setting router ospf passive-interface default

[John Kristoff]

Perhaps I've missed something, but is there a way to implement on a
router already running OSPF, where routing interfaces are not going to
be change the following:

  router ospf [process-id]
   passive-interface default

Without having adjacency changes occur?  In my limited testing, either
with a quick copy and paste or tftp upload to the running config, it
seems that either will result in OSPF dropping all interfaces causing
neighbor adjacencies to have to be reestablished.  Since in my example,
the routing interfaces will have 'no passive-interface', routing really
doesn't change so it would be nice if reconvergence didn't have to occur
either.

John