-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Stephane,
On 02/10/2012 02:42 PM, Stephane Bortzmeyer wrote: > On Thu, Feb 09, 2012 at 08:29:42AM +0100, > Attila Nagy <[email protected]> wrote > a message of 269 lines which said: > >> It seems the problem is that facebook DNS servers time out on AAAA >> records, so unbound gets the false assumption that they are >> unavailable. > > I would say "unbound gets the correct assumption that they are > out-of-order". > > http://status.aa.net.uk/apost.cgi?incident=1392 An update to looking at unbound's code. The log excerpt previously has some code-paths printed out that are impossible; from the code this output should not be possible. That indicates trouble at compiletime; however, there is no resolution on this. Additionally, in unbound's svn trunk, there is a patch that unlinks A, AAAA, and other-type timeouts. Thus if AAAA lookups timeout, then A lookups will still cause a query to be sent out. (up to a small limit, enough to catch these cases as working, but very small for the qps to actual offline servers). Best regards, Wouter -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJPNSGhAAoJEJ9vHC1+BF+NWgsP/AgQhxCjiaGiZQgGcXKKdhls DIvV1DzW8Pjh4S2XIldCuEP63TPCK0xzBVpGccNuN5ow6S4Rgmn3awkT9uv9k/1P 0AybMJSWPEVioTNxOWMfl9t3FNnROCAd5h+jcBMIliQMcAElMZkklRCQ7wL+sEbf 8LJaCpT9ihTkzOTBfFIDyZowh4ds2e4qLEvfHttGsai0cypaSrXvclo7PIsToID1 4cKM4irYG3H7gL5KmyyvlKsMIvsqXBqaEvyMP2X2RmqOf9zth55UaK5o2sO3gnMX pUkW9YxeyMszMDMJMRhkzDb1u5ow0sq3tF2GntPFCjcMAywJ36i2INoKjiX2Im/r LSm3wVvke536Y19B6hZ+0l2pATjHUx7oqSCxnuxQAjvg5ZPm4pwsTGAK0RSMdAC6 fS0N7GF1yp2wRjLjpXl2zFd0eMW5anQP59JiAuDeo2RfkA8yMnGYwB24RgYu7Idw 5Pr30Fuutw8P+CBKTGGufrNnBfnRbeOYj7DNVTG32Hg0EUuVR91ZKqUifycKbXfw hwrc8exbIuvZ1oqGRmstdsi/9ZTpeBgebXTDLTFeJ6M8kR86KseEDWUr6XvRx8Uq NEZGTBobRSs6VxX4TKCBRnkjT9FVIgG3GykDOK9WxZ4eOUTCBKpV3jND3QFPiBRR P1Gm27VxQh1EfXRnRcgU =zi0F -----END PGP SIGNATURE----- _______________________________________________ Unbound-users mailing list [email protected] http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users
