#include #include #include #include #include #include #include int main(void) { int sock; struct rtentry rt; uint32_t addr; if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { perror("socket"); return 1; } memset(&rt, 0, sizeof(rt)); rt.rt_flags = RTF_UP | RTF_HOST; rt.rt_dev = "venet0"; rt.rt_dst.sa_family = AF_INET; for (addr = 0; addr < 0x01000000; addr++) { ((struct sockaddr_in *)&rt.rt_dst)->sin_addr.s_addr = htonl(addr); if ((addr & 0xff) == 0) printf("%s\n", inet_ntoa(((struct sockaddr_in *)&rt.rt_dst)->sin_addr)); if (ioctl(sock, SIOCADDRT, &rt) < 0) perror("ioctl"); } return 0; }

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