A list of shared networks that are configured in the server.
A shared network is the logical aggregation of one or more
subnets that share a common network segment (e.g., multi-
tapped coaxial cable, wiring hub, or switch). This table is
present ONLY for those servers that organize the ranges of
addresses available for assignment where a higher-level
grouping (i.e., the 'shared' network) exists above ranges and
subnets.