Inverse queries (2)
-i mnt-by <maintainer name>
-i mnt-lower <maintainer name>
-i mbrs-by-ref <maintainer name>
-i mnt-routes <maintainer name>
-i cross-mnt <maintainer name>
-i referral-by <maintainer name>
-i rev-srv <hostname | IP address>
-i nserver <hostname | IP address>