#include #include #include #include #include #include #include int main(void) { int sock; struct ifreq ifr; uint32_t addr; if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) { perror("socket"); return 1; } memset(&ifr, 0, sizeof(ifr)); ifr.ifr_flags = IFF_UP | IFF_POINTOPOINT | IFF_RUNNING | IFF_NOARP; ifr.ifr_addr.sa_family = AF_INET; for (addr = 1; addr < 0x01000000; addr++) { sprintf(ifr.ifr_name, "venet0:%u", addr); ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr = htonl(addr); if ((addr & 0xff) == 0) printf("%s\n", inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr)); if (ioctl(sock, SIOCSIFADDR, &ifr) < 0) perror("ioctl"); } return 0; }

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