FreeBSD - getaddrinfo() returning duplicate records...

Here is the code to query for addresses in their numeric form:

Code:

#include <netdb.h> #include <sys/socket.h> #include <stdio.h> #include <stdlib.h> #include <arpa/inet.h> #include <netinet/in.h> #include <strings.h> #include <string.h> int ga_hints( const int, char ** , struct addrinfo * ); int main(int argc, char ** argv){ struct addrinfo * res, * result, hints; int error = 0, host_arg = 0; char host[NI_MAXHOST]; host_arg = ga_hints( argc, argv, &hints ); if( ( error = getaddrinfo( argv[ host_arg ], NULL, &hints, &result ) ) != 0 ){ fputs( gai_strerror( error ), stderr ); exit( -1 ); } for( res = result; res != NULL; res = res->ai_next ){ if( ( error = getnameinfo( res->ai_addr, res->ai_addrlen, host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST ) ) != 0){ fputs( gai_strerror( error ), stderr ); exit( -1 ); } printf(" - %s\n", host); } free(result); return 0; } // Usage: ./galookup -f [inet4 | inet6 | inet4-6] -h [hostname] int ga_hints( const int argc, char ** argv, struct addrinfo * hints ){ int arg, host; bzero( hints, sizeof( *hints) ); for( arg = 1; arg < argc; arg++ ){ if( !strcmp( "-f", argv[ arg ] ) ){ switch( atoi( argv[ ++arg ] ) ){ case 4: hints->ai_family = AF_INET; break; case 6: hints->ai_family = AF_INET6; break; case 0: hints->ai_family = AF_UNSPEC; break; default: printf( "%s is not a valid address family\nDefaulting to AF_UNSPEC...\n", argv[ arg ] ); hints->ai_family = AF_UNSPEC; break; } // Switch } //if( !strcmp()) else if( !strcmp( "-h", argv[ arg ] ) ) host = arg + 1; } //for(...) return host; }

and look what happens when I run it:

Code:

$ ./galookup -f 0 -h localhost - 127.0.0.1 - 127.0.0.1 - 127.0.0.1 - ::1 - ::1 - ::1 $ $ $ $ ./galookup -f 0 -h www.google.com - 74.125.227.146 - 74.125.227.145 - 74.125.227.144 - 74.125.227.147 - 74.125.227.148 - 74.125.227.144 - 74.125.227.145 - 74.125.227.148 - 74.125.227.147 - 74.125.227.148 - 74.125.227.144 - 74.125.227.145 - 74.125.227.146 - 74.125.227.147 - 74.125.227.146 - 2001:4860:4002:800::1010 - 2001:4860:4002:800::1010 - 2001:4860:4002:800::1010 $ $ $ ./galookup -f 0 -h FreeBSD-01v - 127.0.0.1 - 127.0.0.1 - 127.0.0.1 - 192.168.0.4 - 192.168.0.4 - 192.168.0.4 $

Here's what's in /etc/hosts

Code:

::1 localhost localhost.my.domain 127.0.0.1 localhost FreeBSD-01v localhost.my.domain 192.168.0.4 FreeBSD-01v

Also, when I do an nslookup, the addresses are totally different for websites but they all seem to work... What gives with that also?