[j-nsp] Dynamic generation of interface IPs of OSPF neighbo(u)rs ?

[David Ball]

  Brain stuck in Friday mode.  I've created a prefix-list using apply-path
which looks at 'protocols bgp group <*> neighbor <*>' to get a list of my
BGP neighbour IPs.  Works fine.  Now I'm trying to think of a way to do the
same with OSPF neighbor IPs (and perhaps even LDP, RSVP, etc).  Not quite as
easy since they're not all listed together in 1 spot anywhere, so I'm trying
to figure out how or if it's possible to dynamically generate such a list.
What I'm trying to create is a firewall filter for lo0 which only allows
appropriate traffic to the RE, such that if one of our operators adds a new
OSPF interface, they won't have to remember to update the firewall filter.
As stated above, the stanza to allow BGP was easy, but I can't think of a
way for the other protocols.  Trying to avoid manually maintaining a
prefix-list which contains all of said IPs.  Is commit scripts my only path
to glory ?

David