struct dhcp_options {
    uint8_t index;
    uint8_t length;
    uint8_t *data;
} __attribute__((packed));

struct dhcp_packet {
    uint8_t operation;
    uint8_t network_type;
    uint8_t network_addr_length;
    uint8_t relay_agents;
    uint32_t connection_id;
    uint16_t seconds_start;
    uint16_t flags;
    struct ip_addr client_ip;
    struct ip_addr own_ip;
    struct ip_addr server_ip;
    struct ip_addr relay_ip;
    struct mac client_mac;
    uint8_t mac_padding[10];
    uint8_t server_name[64];
    uint8_t file_name[128];
    uint32_t magic_cookie;
    struct dhcp_options options[255];
} __attribute__((packed));