deps: c-ares float, win ipv6 bad fec0 prefix

Was 72c5458aee:

  PR-URL: https://github.com/nodejs/node/pull/5090
  Reviewed-By: Fedor Indutny <fedor@indutny.com>

Reimplemented for c-ares 1.13.0

PR-URL: https://github.com/nodejs/node/pull/15378
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: https://github.com/nodejs/node/pull/19939
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This commit is contained in:
Rod Vagg 2013-05-15 21:25:11 +02:00 committed by Ruben Bridgewater
parent de66bd34b9
commit 2b6bb9f588
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@ -1272,6 +1272,11 @@ 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(addresses[addressesIndex].text, "fec0:0:0:ffff:", 14) == 0)
continue;
if (memcmp(&namesrvr.sa6->sin6_addr, &ares_in6addr_any,
sizeof(namesrvr.sa6->sin6_addr)) == 0)
continue;