Hi, I got more information: If, in the attached example test.c, the ai_family field of the hints argument to getaddrinfo is set to "AF_UNSPEC", then I do get the correct scope id in the returned data structure. If the hint is set to AF_INET6, I don’t (but I also do not get the debugging information that I put into libnss-myhostname, so I might just not fully understand what’s going on here). Greetings, Joachim -- Joachim "nomeata" Breitner Debian Developer nomeata@debian.org | ICQ# 74513189 | GPG-Keyid: 4743206C JID: nomeata@joachim-breitner.de | http://people.debian.org/~nomeata
#include <stdio.h>
#include <string.h>
#include <linux/filter.h>
#include <stdlib.h>
#include <netinet/ip6.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
int main(int argc, char *argv[])
{
if (argc < 2) {
printf("Usage: %s hostname\n", argv[0]);
exit(1);
}
struct addrinfo hints, *ai;
struct sockaddr_in6 *addr;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
getaddrinfo(argv[1], 0, &hints, &ai);
addr = (struct sockaddr_in6 *)(ai->ai_addr);
fprintf(stdout, "Scope id returned for %s: %d\n", argv[1], addr->sin6_scope_id);
char foo[INET6_ADDRSTRLEN];
fprintf(stdout, "Family returned for %s: %d (AF_INET6: %d)\n", argv[1], ai->ai_family, AF_INET6);
fprintf(stdout, "Addr returned for %s: %s\n", argv[1], inet_ntop(AF_INET6, &(addr->sin6_addr), &(foo[0]), INET6_ADDRSTRLEN));
return 0;
}
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