An EGP to OSPF export rule. Each rule is keyed by
the IP network of the EGP route in the routing
table, and the Autonomous System from which the
route was learned. The Ip network can be set to a
wild card as can the (from) AS. The route is either
accepted to be advertised to the neighbor or
discarded from being advertised, and its metric is
applied according to the rule. The best match is as
follows:
IP Network From AS Rank
exact exact 1st
exact wild card 2nd
wild card exact 3rd
wild card wild card 4th