typedef struct DHCPPacket DHCPPacket;
+#define DHCP_IP_SIZE (int32_t)(sizeof(struct iphdr))
+#define DHCP_IP_UDP_SIZE (int32_t)(sizeof(struct udphdr) + DHCP_IP_SIZE)
+#define DHCP_MESSAGE_SIZE (int32_t)(sizeof(DHCPMessage))
+
enum {
DHCP_PORT_SERVER = 67,
DHCP_PORT_CLIENT = 68,
DHCP_OPTION_DOMAIN_NAME = 15,
DHCP_OPTION_NTP_SERVER = 42,
DHCP_OPTION_REQUESTED_IP_ADDRESS = 50,
+ DHCP_OPTION_IP_ADDRESS_LEASE_TIME = 51,
DHCP_OPTION_OVERLOAD = 52,
DHCP_OPTION_MESSAGE_TYPE = 53,
+ DHCP_OPTION_SERVER_IDENTIFIER = 54,
DHCP_OPTION_PARAMETER_REQUEST_LIST = 55,
DHCP_OPTION_CLIENT_IDENTIFIER = 61,
DHCP_OPTION_END = 255,