IPv6 Reverse Lookup bind9

Helmut Schneider jumper99 at gmx.de
Wed Sep 22 16:35:02 UTC 2004


Hi Jim,

Jim Reid wrote:

>     Helmut> host 2001:600:1003::2:0:1 Host
>     \[x20010600100300000000000200000001/128].ip6.arpa not
>     Helmut> found: 3(NXDOMAIN)
>
> You're using a broken version of host. It's converting the IPv6
> address into a bit-string label domain name for looking up in the
> DNS. Bit-string labels are deprecated. And besides, that bit-string
> label -- \[x20010600100300000000000200000001/128] -- isn't in the
> ip6.arpa zone. So it's no surprise you get an NXDOMAIN response.
> Try using an up to date version of host.

Indeed, OpenBSD3.5 resolves (succesfully) via nibble format while 
OpenBSD3.4 tries to resolve via bitstring.

Thanks a lot, Helmut


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