Dear, I have impelmented a BIND9 server. It works OK, but some days ago an application failed because it needed to resolve the reverse of some IP addresses from range 10.x.x.x, and they waited for a long time and failed, because they need a NXDOMAIN fast response.
I don't want to make a local zone 10.IN-ADDR.ARPA, because I want to use the two public nameservers from Internet: BLACKHOLE-1.IANA.ORG (192.175.48.6) BLACKHOLE-2.IANA.ORG (192.175.48.42) When I query these DNS's from my console from the BIND server, and from any host I have available here, the result is this: root@DNS:~# host -t NS 10.IN-ADDR.ARPA 192.175.48.6 Using domain server: Name: 192.175.48.6 Address: 192.175.48.6#53 Aliases: 10.in-addr.arpa name server blackhole-2.iana.org. 10.in-addr.arpa name server blackhole-1.iana.org. and finally I get the NXDOMAIN I need: DNS:~# host -t NS 10.10.12.1 192.175.48.6 Using domain server: Name: 192.175.48.6 Address: 192.175.48.6#53 Aliases: Host 1.12.10.10.in-addr.arpa. not found: 3(NXDOMAIN) Is it OK that I do? Are blackholes servers useful for this purpose ? Thanks a lot !!! _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users