(machine
    (address "01:40/5010-A3F.0") ; router's address (to access admin panel)
    (address "01:40/5010-A40.0") ; another adress (to access admin panel)
)

;; A 100MBit interface uplink from <another company> 
;; Clients from floor 2 using only this connection
(interface "wan0" 
    (phys-location "00:00:01")
    (address "01:40/5010-A3F")
    (mtu 2048u) ; 2 kiB
    (address-mask "01:40/5010-(A3F-A4A)")
)

;; A 1Gbit interface uplink from <title>
(interface "wwan1"
    (phys-location "00:00:02")
    (address "01:40/5010-A3F")
    (mtu 2048u)
    (address-mask "01:40/5010-(A3F-A4A)")
)

;; All client machines connected to router (floor 1)
(interface "lan0"
    (phys-location "00:01:01")
    (address "01:40/5010-A3F")
    (mtu 2048u)
    (address-mask "01:40/5010-A3F.(0-FFFF)")
)

;; All client machines connected to router (floor 2)
(interface "lan1"
    (phys-location "00:01:02")
    (address "01:40/5010-A40")
    (mtu 2048u)
    (address-mask "01:40/5010-A40.(0-FFFF)")
)

;; Route announcement
;; Clients on lan0 would receive:
;; to: 01:40/5010-(A3F-A40) metric: 1
;; to: 01:40/5010-any metric 1
;; to: any metric 1
(route-table "global"
    (interface-alias "lan0" ; announce the following routes on interface lan0
        (route-to "01:40/5010-(A3F-A40).*"
            (metric 1u)
        )
        (route-to "01:40/5010-*" 
            (via "wan0")
            (metric auto)
        )
        ; routing globally to whole internet
        (route-to "*" 
            (via "wwan1")
            (metric auto)
        )
    )

    (interface-alias "lan1"
        (route-to "01:40/5010-(A3F-A40).*"
            (metric 1u)
        )
        (route-to "*" 
            (via "wan0")
            (metric auto)
        )
        ; do not route to global internet via wwan1
    )

    ;; inbound routing
    ;; announce to uplink that we have something on our network
    ;; if there are any machines that is local only then don't announce the 
    ;; adress to uplink, so no route to host would be returned by uplink for the
    ;; remote host.
    (interface-alias "wan0"
        (route-to "01:40/5010-A3F.*" 
            (via "lan0")
            (metric 1u)
        )

        (route-to "01:40/5010-A40.*"
            (via "lan1")
            (metric 1u)
        )
    )

    (interface-alias "wwan1"
        (route-to "01:40/5010-A3F.*" 
            (via "lan0")
            (metric 1u)
        )

        ; no route to lan1 members via this interface
    )
)