README

@@ -44,6 +44,9 @@ If you prefer OpenSSL, run configure with "--without-gnutls".
 You can disable BitTorrent, Metalink support by providing --disable-bittorrent,
 --disable-metalink respectively to configure script.
 
+In order to enable async DNS support, you need ares. You can grab it from:
+ftp://athena-dist.mit.edu/pub/ATHENA/ares
+
 5. BitTorrrent
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 The filename of the downloaded file is determined as follows: