Maintained by: NLnet Labs

Problems about forward zone for subdomain

Ralph Dolmans
Thu Sep 14 15:08:28 CEST 2017


Hi Newell,

On 14-09-17 13:52, Newell Zhu via Unbound-users wrote:
> 
> What does it mean?
> 
> I want to find NS for www.example.com <http://www.example.com>, It it
> result to ab.example.com <http://ab.example.com> instead of example.com
> <http://example.com>.
> 
> 
> Am I make mistakes or it’s designed to?

You are right that ab.example.com will be the result from
rbtree_find_less_equal(). However, when there is no exact match,
forwards_lookup() will continue to go up until the qname is a subdomain
of the forward zone. See iterator/iter_fwd.c:360.

-- Ralph