?? main.c
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#include <errno.h>#include <netdb.h>#include <stdio.h>#include <fcntl.h>#include <stdlib.h>#include <unistd.h>#include <string.h>#include <sys/socket.h>#include <sys/types.h>#include <sys/stat.h>#include <sys/ioctl.h>#include <arpa/inet.h>#include <net/route.h>#include <netinet/in.h>#include <linux/if_arp.h>#include <linux/if_ether.h>#define E_ERR 1int main(){ struct rtentry rt; struct sockaddr_in * my_addr; int sock_fd; char devi[] = "eth0"; if ((sock_fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { perror("socket"); close(sock_fd); return E_ERR; } rt.rt_flags = (RTF_UP | RTF_GATEWAY | RTF_HOST);//RTF_DEFAULT | my_addr->sin_family = AF_INET; inet_aton("199.0.0.0", &my_addr->sin_addr); memcpy(&rt.rt_dst, my_addr, sizeof(struct sockaddr)); inet_aton("199.0.0.110", &my_addr->sin_addr); memcpy(&rt.rt_gateway, my_addr, sizeof(struct sockaddr)); inet_aton("255.255.255.0", &my_addr->sin_addr); memcpy(&rt.rt_genmask, my_addr, sizeof(struct sockaddr)); rt.rt_dev = devi; if (ioctl(sock_fd, SIOCDELRT, &rt) < 0) { perror("SIOCADDRT"); close(sock_fd); return E_ERR; } return 0;}?? 快捷鍵說明
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