schema:             ROUTE-SCHEMA
ref:                dn42.route
key:                route       required  single    primary schema
key:                mnt-by      required  multiple  lookup=dn42.mntner
key:                origin      required  multiple  lookup=dn42.aut-num
key:                member-of   optional  multiple  lookup=dn42.route-set
key:                admin-c     optional  multiple  lookup=dn42.person,dn42.role
key:                tech-c      optional  multiple  lookup=dn42.person,dn42.role
key:                descr       optional  multiple
key:                remarks     optional  multiple
key:                source      required  single    lookup=dn42.registry
key:                pingable    optional  multiple
key:                max-length  optional  single
network-owner:      inetnum
mnt-by:             DN42-MNT
source:             DN42