Binary package hint: libc6
The function "getaddrinfo" returns an error when it receives a numerical IPv6 value as hostname.
The following sample demonstrates the bug:
$ cat > bug.c <<EOF
#include <stdio.h>
#include <sys/socket.h>
#include <netdb.h>
const char * candidate="2001:db8::1";
int main(int argc, char * argv[])
{
int ret=0;
struct addrinfo *ai = NULL;
ret = getaddrinfo(candidate, NULL, NULL, &ai);
if (ai) freeaddrinfo(ai);
if (ret != 0) printf("Error on '%s': %s.\n", candidate, gai_strerror(ret));
return 0;
}
EOF
$ gcc -o bug bug.c
$ ./bug
Error on '2001:db8::1': Address family for hostname not supported.
I have tested the same code on a Debian Etch and the bug does not appear.
I am running a Ubuntu Hardy with latest updates. My libc6 package is 2.7-10ubuntu3.
$ lsb_release -rd
Description: Ubuntu 8.04
Release: 8.04
$ apt-cache policy libc6
libc6:
Installed: 2.7-10ubuntu3
Candidate: 2.7-10ubuntu3
Version table:
*** 2.7-10ubuntu3 0
500 http://ubuntutym.u-toyama.ac.jp hardy/main Packages
100 /var/lib/dpkg/status
I just noticed this discussion: http://