Trivial test program to investigate multiple addresses returned by gethostbyname. To run do: gcc -o tester tester.c ; ./tester beta.allcosts.net

tester.c

#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

int main(int argc, char ** argv) 
{
    int i;
    struct hostent * answer = gethostbyname(argv[1]);

    if (!answer) {
        return 1;
    }

    for(i = 0; answer->h_addr_list[i] != NULL; i++) {
        struct in_addr in;

        memcpy(&in.s_addr, answer->h_addr_list[i], sizeof(in.s_addr));
        printf("%s\n", inet_ntoa(in)); 
    }

    return 0;
}