func (m *OuiDb) Lookup(address HardwareAddr) *AddressBlock {
	for _, block := range m.Blocks {
		if block.Contains(address) {
			return &block
		}
	}

	return nil
}
func (m *OuiDb) Lookup(address HardwareAddr) *AddressBlock {
	for _, block := range m.Blocks {
		if block.Contains(address) {
			return &block
		}
	}

	return nil
}
func ( m * OuiDb ) Lookup ( address HardwareAddr ) * AddressBlock { for _ , block := range m . Blocks { if block . Contains ( address ) { return & block } } return nil }
// Lookup finds the OUI the address belongs to
Lookup finds the OUI the address belongs to