-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Jan-Piet,
Yes it marks servers as down and stops sending queries. There was a rewrite for better handling of this case, if you run an older version an update may be useful. However, all versions step down packets to hosts that are down. This has a timeout of x minutes (1-15). After that your service should re-enable again. If the downtime was under two minutes, you have to wait that amount of time for service to resume (exponential backoff used here). If the downtime was longer, you may have to wait 15 minutes (infra-ttl config option) before service resumes to hosts that were probed to be 'down'. If you want service to instantly go down and up with the line downtime, and you can notice the line-bounce via some other method, then you could use e.g. unbound-control flush_infra to resume traffic. Best regards, Wouter On 01/23/2012 08:29 AM, Jan-Piet Mens wrote: > Hello, > > I'm running unbound-1.4.14 behind an ADSL line which is cycled once > in a while. This can take anything from several seconds to > four/five minutes (router reboot) before the Internet is visible > again. At this point, I've been experiencing Unbound replies with a > SERVFAIL to all queries, as though it marks the DNS servers as > being down and stops sending requests to them. > > Is this a known issue? > > (Somebody else has also experienced this problem with a vanilla > Unbound on what I call DAP [1], and he's reported this to me > privately with a pcap and verbosiyt=5 logfile I can submit > privately if required.) > > Regards, > > -JP > > [1]: http://jpmens.net/pages/dns/dnssec-appliance/ > _______________________________________________ Unbound-users > mailing list [email protected] > http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJPHRhvAAoJEJ9vHC1+BF+NOgUQAJCWs6PJox/rbNtg2e1C+Px+ s4+/SBczubSL0jyYmpSxpHncpTdHVnmSK8kwpwkRzmdzxu9pK1UdBhDemEoPZFMQ Dzk32STkCMsWuSrQ9brTL3RchUAwUIncCYSf/2zcnv7MXNImdFAX9zWMqKNVBU9p hz3BWOpJdUHTYGUVMKmlazsoNwg8SKpHLoTGjEPlQVTDd7VfAhENwBnqy3xnrV8d swwiYZmLzbHieVISxEGkqDtX+nfSXtZzP7leWnWjQ6CMcd3lTrmcr0biIBWukLmp SYR/+kPuDK9xTTp8iDq+uvbFP259B2iLOvzKOGyavzWDQw+bDiqjj4gT/XyeM+DN 7PiZFRUVGPnQJKyL4kkOZaOycnNhDhREOIJ2IVW3rgIlSki85hQ7xKE/dFmoRZnp j/afmwzGd+g7LCPXlqlTqFcM7EW34BSHDslbWg/wMah2wpQBWD5giqcky9enHsgp FqEPamaSk52SuqZ02OfsZL5+GGEqMLMghZSzysQhOzOFWoTKvzYeB6r7m/bdVF3E AUJBGD8Au2StqP8a7WdSEdabq/1cXIo6rD+HhwJb7e+9BgsF/dkvzUkAcT+ysKe5 z38uxltQvm0/lbPpp6QkgYIq5963uiggW1/qS+tdpbTJic1n+I0gFfSsvfCKvjGe 1C+fwo6zRb4NKV84TNFH =27ir -----END PGP SIGNATURE----- _______________________________________________ Unbound-users mailing list [email protected] http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users
