vendor: add d2g/dhcp4server

vendor/github.com/d2g/dhcp4server/leasepool/leasepool.go

@@ -0,0 +1,49 @@
+package leasepool
+
+import (
+	"net"
+)
+
+/*
+ * Lease.IP is the Key.
+ */
+type LeasePool interface {
+	//Add A Lease To The Pool
+	AddLease(Lease) error
+
+	//Remove
+	RemoveLease(net.IP) error
+
+	//Remove All Leases from the Pool (Required for Persistant LeaseManagers)
+	PurgeLeases() error
+
+	/*
+	 * Get the Lease
+	 * -Found
+	 * -Copy Of the Lease
+	 * -Any Error
+	 */
+	GetLease(net.IP) (bool, Lease, error)
+
+	//Get the lease already in use by that hardware address.
+	GetLeaseForHardwareAddress(net.HardwareAddr) (bool, Lease, error)
+
+	/*
+	 * -Lease Available
+	 * -Lease
+	 * -Error
+	 */
+	GetNextFreeLease() (bool, Lease, error)
+
+	/*
+	 * Return All Leases
+	 */
+	GetLeases() ([]Lease, error)
+
+	/*
+	 * Update Lease
+	 * - Has Updated
+	 * - Error
+	 */
+	UpdateLease(Lease) (bool, error)
+}