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c-ares: ignore rogue DNS servers reported by windows

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Saúl Ibarra Corretgé 2012-06-28 08:48:54 +02:00 committed by Bert Belder
parent 15cfcfd309
commit 5ee80f1a7a
1 changed files with 5 additions and 0 deletions
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5
src/ares/ares_init.c
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@ -1012,6 +1012,11 @@ static int get_DNS_AdaptersAddresses(char **outptr)
}
else if (namesrvr.sa->sa_family == AF_INET6)
{
/* Windows apparently always reports some IPv6 DNS servers that
* prefixed with fec0:0:0:ffff. These ususally do not point to
* working DNS servers, so we ignore them. */
if (strncmp(txtaddr, "fec0:0:0:ffff:", 14) == 0)
continue;
if (memcmp(&namesrvr.sa6->sin6_addr, &ares_in6addr_any,
sizeof(namesrvr.sa6->sin6_addr)) == 0)
continue;