code: func ExcludeIP(dhcpHandler *DHCPHandler, ipRange string) []net.IP {
  	excludeIPs, _ := IPsFromRange(ipRange)
  
  	for _, excludeIP := range excludeIPs {
  		if excludeIP != nil {
  			// Calculate the position for the dhcp pool
  			position := uint32(binary.BigEndian.Uint32(excludeIP.To4())) - uint32(binary.BigEndian.Uint32(dhcpHandler.start.To4()))
  
  			dhcpHandler.available.ReserveIPIndex(uint64(position), FakeMac)
  		}
  	}
  	return excludeIPs
  }
docs: // ExcludeIP remove IP from the pool