diff options
| -rw-r--r-- | src/print_ipv6_addr.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/print_ipv6_addr.c b/src/print_ipv6_addr.c index b370011..e96c0d3 100644 --- a/src/print_ipv6_addr.c +++ b/src/print_ipv6_addr.c @@ -70,6 +70,7 @@ static char *get_ipv6_addr() { memset(&hints, 0, sizeof(struct addrinfo)); hints.ai_family = AF_INET6; + hints.ai_socktype = SOCK_DGRAM; /* We resolve the K root server to get a public IPv6 address. You can * replace this with any other host which has an AAAA record, but the @@ -83,7 +84,11 @@ static char *get_ipv6_addr() { for (resp = result; resp != NULL; resp = resp->ai_next) { char *addr_string = get_sockname(resp); - if (!addr_string) + /* If we could not get our own address and there is more than + * one result for resolving k.root-servers.net, we cannot + * cache. Otherwise, no matter if we got IPv6 connectivity or + * not, we will cache the (single) result and are done. */ + if (!addr_string && result->ai_next != NULL) continue; if ((cached = malloc(sizeof(struct addrinfo))) == NULL) |