作者还提供了基于老版本的应用程序移植到新版本上的方法指导。
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libnet库的1.0.0版本，共约7600行C源代码，33个源程序文件，12个C头文件
，50余个自定义函数，提供的接口函数包含15种数据包生成器和两种数据包发送器(IP层
和数据链路层)。目前只支持IPv4，不支持IPv6。已经过测试的系统平台包括： * OpenBSD 2.6snap, 2.5, 2.4, 2.3, 2.2 (i386)
* FreeBSD 4.0-STABLE, 3.3-STABLE, 3.2-RELEASE, 3.1-CURRENT, 3.0, 2.2 (i386)
* NetBSD 1.3.2 (i386) * BSD/OS 3.x (i386) * BSDi 3.0 (i386)
* Linux 2.2.x, 2.0.3x, 2.1.124 (i386, alpha) (libc: 2.4.x, glibc: 2.0.x) * Solaris 7 (SPARC, gcc 2.7.2[13], 2.8.2), 2.6 (SPARC, gcc 2.8.2), 2.5.x (SPARC, gcc 2.7.2[13]) * IRIX 6.2
* MacOS 5.3rhapsody (powerpc)
libnet提供的接口函数按其作用可分为四类： * 内存管理(分配和释放)函数 * 地址解析函数 * 数据包构造函数 * 数据包发送函数 2接口函数及其功能
以下分别列出这些接口函数及其功能(其参数含义简单易懂，不再解释)： 内存管理函数
单数据包内存初始化：
int libnet_init_packet(u_short packet_size, u_char **buf); 单数据包内存释放：
void libnet_destroy_packet(u_char **buf); 多数据包内存初始化：
int libnet_init_packet_arena(struct libnet_arena **arena, u_short packet_num, u_short packet_size); 访问多数据包内存中的下一个数据包：
u_char *libnet_next_packet_from_arena(struct libnet_arena **arena, u_short packet_size); 多数据包内存释放：
void libnet_destroy_packet_arena(struct libnet_arena **arena); 地址解析函数
解析主机名：
u_char *libnet_host_lookup(u_long ip, u_short use_name); 解析主机名(可重入函数)：
void libnet_host_lookup_r(u_long ip, u_short use_name, u_char *buf); 域名解析：
u_long libnet_name_resolve(u_char *ip, u_short use_name); 获取接口设备IP地址：
u_long libnet_get_ipaddr(struct libnet_link_int *l, const u_char *device, const u_char *ebuf); 获取接口设备硬件地址：
struct ether_addr *libnet_get_hwaddr(struct libnet_link_int *l, const u_char *device, const u_char *ebuf); 数据包构造函数
ARP协议数据包：
int libnet_build_arp(u_short hrdw, u_short prot, u_short h_len, u_short p_len, u_short op, u_char *s_ha, u_char *s_pa, u_char *t_ha, u_char *t_pa, const u_char *payload, int payload_len, u_char *packet_buf); DNS协议数据包：
int libnet_build_dns(u_short id, u_short flags, u_short num_q, u_short num_answ_rr, u_short num_auth_rr, u_short num_add_rr, const u_char * payload, int payload_len, u_char *packet_buf); 以太网协议数据包：
int libnet_build_ethernet(u_char *daddr, u_char *saddr, u_short id, const u_char *payload, int payload_len, u_char *packet_buf);
ICMP协议数据包(ICMP_ECHO / ICMP_ECHOREPLY)：
int libnet_build_icmp_echo(u_char type, u_char code, u_short id, u_short seq, const u_char *payload, int payload_len, u_char *packet_buf);
ICMP协议数据包(ICMP_MASKREQ / ICMP_MASKREPLY)：
int libnet_build_icmp_mask(u_char type, u_char code, u_short id, u_short seq, u_long mask,
const u_char *payload, int payload_len, u_char *packet_buf);
ICMP协议数据包(ICMP_UNREACH)：
int libnet_build_icmp_unreach(u_char type, u_char code, u_short orig_len, u_char orig_tos, u_short orig_id, u_short orig_frag,
u_char orig_ttl, u_char orig_prot, u_long orig_saddr, u_long orig_daddr, const u_char *payload, int payload_len, u_char *packet_buf);
ICMP协议数据包(ICMP_TIMEXCEED)：
int libnet_build_icmp_timeexceed(u_char type, u_char code, u_short orig_len, u_char orig_tos, u_short orig_id, u_short orig_frag, u_char orig_ttl, u_char orig_prot, u_long orig_saddr, u_long orig_daddr, const u_char *payload, int payload_len, u_char *packet_buf);
ICMP协议数据包(ICMP_REDIRECT)： int libnet_build_icmp_redirect(u_char type, u_char code, u_long gateway, u_short orig_len, u_char orig_tos, u_short orig_id, u_short orig_frag, u_char orig_ttl, u_char orig_prot, u_long orig_saddr, u_long orig_daddr, const u_char *payload, int payload_len, u_char *packet_buf);
ICMP协议数据包(ICMP_TSTAMP / ICMP_TSTAMPREPLY)：
int libnet_build_icmp_timestamp(u_char type, u_char code, u_short id, u_short seq, n_time otime, n_time rtime, n_time ttime, const u_char *payload, int payload_len, u_char *packet_buf); IGMP协议数据包：
int libnet_build_igmp(u_char type, u_char code, u_long ip, const u_char *payload, int payload_len, u_char *packet_buf); IP协议数据包： int libnet_build_ip(u_short len, u_char tos, u_short ip_id, u_short frag, u_char ttl, u_char protocol, u_long saddr,
u_long daddr, const u_char *payload, int payload_len, u_char *packet_buf); OSPF路由协议数据包：
int libnet_build_ospf(u_short len, u_char type, u_long router_id, u_long area_id, u_short auth_type,
const char *payload, int payload_s, u_char *buf); OSPF路由协议数据包(Hello)：
int libnet_build_ospf_hello(u_long netmask, u_short interval, u_char options, u_char priority,
u_int dead_interval, u_long des_router, u_long backup, u_long neighbor,
const char *payload, int payload_s,
u_char *buf);
OSPF路由协议数据包(DataBase Description (DBD))：
int libnet_build_ospf_dbd(u_short len, u_char options, u_char type, u_int sequence_num, const char *payload, int payload_s, u_char *buf);
OSPF路由协议数据包(Link State Request (LSR))：
int libnet_build_ospf_lsr(u_int type, u_int ls_id, u_long adv_router, const char *payload, int payload_s, u_char *buf);
OSPF路由协议数据包(Link State Update (LSU))：
int libnet_build_ospf_lsu(u_int num, const char *payload, int payload_s, u_char *buf);
OSPF路由协议数据包(Link State Acknowledgement (LSA))：
int libnet_build_ospf_lsa(u_short age, u_char options, u_char type, u_int ls_id, u_long adv_router, u_int sequence_num, u_short len, const char *payload, int payload_s, u_char *buf);
OSPF路由协议数据包(OSPF Link Sate NetworkLink State Router)： int libnet_build_ospf_lsa_net(u_long netmask, u_int router_id, const char *payload, int payload_s, u_char *buf);
OSPF路由协议数据包(Link State Router)：
int libnet_build_ospf_lsa_rtr(u_short flags, u_short num, u_int id, u_int data, u_char type, u_char tos, u_short metric, const char *payload, int payload_s, u_char *buf);
OSPF路由协议数据包(Link State Summary)：
int libnet_build_ospf_lsa_sum(u_long netmask, u_int metric, u_int tos, const char *payload, int payload_s, u_char *buf);
OSPF路由协议数据包(Link State AS External)：
int libnet_build_ospf_lsa_as(u_long netmask, u_int metric, u_long fwd_addr, u_int tag,
const char *payload, int payload_s, u_char *buf);
RIP路由协议数据包：
int libnet_build_rip(u_char cmd, u_char ver, u_short domain, u_short addr_fam, u_short route_tag, u_long ip, u_long mask, u_long next_hop, u_long metric, const u_char *payload, int payload_len, u_char *packet_buf); TCP协议数据包：
int libnet_build_tcp(u_short th_sport, u_short th_dport, u_long th_seq,
u_long th_ack, u_char th_flags, u_short th_win, u_short th_urg, const u_char *payload, int payload_len, u_char *packet_buf); UDP协议数据包：
int libnet_build_udp(u_short sport, u_short dport, const u_char *payload,
int payload_len, u_char *packet_buf); IP协议数据包选项：
int libnet_insert_ipo(struct ipoption *opt, u_char opt_len, u_char *packet_buf); TCP协议数据包选项：
int libnet_insert_tcpo(struct tcpoption *opt, u_char opt_len, u_char *packet_buf); 数据包发送函数
打开raw socket：
int libnet_open_raw_sock(int protocol); 关闭raw socket：
int libnet_close_raw_sock(int socket); 选择接口设备：
int libnet_select_device(struct sockaddr_in *sin, u_char **device, u_char *ebuf); 打开链路层接口设备：
struct libnet_link_int *libnet_open_link_interface(char *device, char *ebuf);
关闭链路层接口设备：
int libnet_close_link_interface(struct libnet_link_int *l); 发送IP数据包：
int libnet_write_ip(int socket, u_char *packet, int packet_size); 发送链路层数据包：
int libnet_write_link_layer(struct libnet_link_int *l, const u_char *device, u_char *packet, int packet_size); 检验和计算：
int libnet_do_checksum(u_char *packet, int protocol, int packet_size); 相关的支持函数
随机数种子生成器：
int libnet_seed_prand(); 获取随机数：
u_long libnet_get_prand(int modulus); 16进制数据输出：
void libnet_hex_dump(u_char * buf, int len, int swap, FILE *stream);