DHCP server commands

config 
    - service
        - vprn service-id [customer customer-id]
        - no vprn service-id
            - dhcp
                - local-dhcp-server server-name [create]
                - no local-dhcp-server server-name
                    - description description-string
                    - no description
                    - [no] force-renews
                    - pool pool-name [create]
                    - no pool pool-name
                        - description description-string
                        - no description
                        - max-lease-time [days days] [hrs hours] [min minutes] [sec seconds]
                        - no max-lease-time
                        - min-lease-time [days days] [hrs hours] [min minutes] [sec seconds]
                        - no min-lease-time
                        - minimum-free minimum-free [percent] [event-when-depleted]
                        - no minimum-free
                        - [no] nak-non-matching-subnet
                        - offer-time [min minutes] [sec seconds]
                        - no offer-time
                        - options
                            - custom-option option-number address [ip-address...(up to 4 max)]
                            - custom-option option-number hex hex-string
                            - custom-option option-number string ascii-string
                            - no custom-option option-number
                            - dns-server [ip-address...(up to 4 max)]
                            - domain-name domain-name
                            - no domain-name
                            - lease-rebind-time [days days] [hrs hours] [min minutes] [sec seconds]
                            - no lease-rebind-time
                            - lease-renew-time [days days] [hrs hours] [min minutes] [sec seconds]
                            - no lease-renew-time
                            - lease-time [days days] [hrs hours] [min minutes] [sec seconds]
                            - no lease-time
                        - subnet {ip-address/mask|ip-address netmask} [create]
                        - no subnet {ip-address/mask|ip-address netmask}
                            - [no] address-range start-ip-address end-ip-address
                            - [no] exclude-addresses start-ip-address [end-ip-address]
                            - maximum-declined maximum-declined
                            - no maximum-declined
                            - minimum-free minimum-free
                            - no minimum-free
                            - options
                                - custom-option option-number address [ip-address...(up to 4 max)]
                                - custom-option option-number hex hex-string
                                - custom-option option-number string ascii-string
                                - no custom-option option-number 
                                - default-router ip-address [ip-address...(up to 4 max)]
                                - no default-router
                                - subnet-mask ip-address
                                - no subnet-mask
                    - [no] use-gi-address
                    - user-db local-user-db-name
                    - no user-db