Re: Needless DNS queries

2022-06-14 Thread Dieter Rohlfing
(at least in Linux) suffixes the original domain name with each item in the search list until the new domain name resolves. So this is regular behaviour and it explains the needless DNS queries. AdguardHome uses the response code NXDOMAIN to signal the client "this is a forbidden domain&qu

Re: Needless DNS queries

2022-06-07 Thread Lee
On 6/8/22, Greg Wooledge wrote: > On Wed, Jun 08, 2022 at 12:56:52AM +, Lee wrote: >> host and dig are non-standard. or use non-standard name lookups? >> library?? >> In any case, try your example with ping or ssh - the search list will >> be applied after the initial NXDOMAIN > > On Debian,

Re: Needless DNS queries

2022-06-07 Thread Greg Wooledge
On Wed, Jun 08, 2022 at 12:56:52AM +, Lee wrote: > host and dig are non-standard. or use non-standard name lookups? library?? > In any case, try your example with ping or ssh - the search list will > be applied after the initial NXDOMAIN On Debian, the canonical tool for performing generic ho

Re: Needless DNS queries

2022-06-07 Thread Lee
On 6/7/22, Tim Woodall wrote: > On Tue, 7 Jun 2022, Greg Wooledge wrote: > >> On Tue, Jun 07, 2022 at 11:22:34AM -0400, Dan Ritter wrote: >>> >>> search Search list for host-name lookup. By default, the >>> search >>> [...] >>> This may be changed by listing the desired domain

Re: Needless DNS queries

2022-06-07 Thread Tim Woodall
On Tue, 7 Jun 2022, Greg Wooledge wrote: On Tue, Jun 07, 2022 at 11:22:34AM -0400, Dan Ritter wrote: search Search list for host-name lookup. By default, the search [...] This may be changed by listing the desired domain search path following the search keyword with spaces o

Re: Needless DNS queries

2022-06-07 Thread Lee
On 6/7/22, Darac Marjal wrote: > > On 07/06/2022 17:53, Greg Wooledge wrote: >> >> To the best of my knowledge, there isn't any setting to *prevent* the >> appending of search domains to a name, no matter how many dots you put >> in the name. > > I've wondered about that in the past. Is this maybe

Re: Needless DNS queries

2022-06-07 Thread Darac Marjal
On 07/06/2022 17:53, Greg Wooledge wrote: On Tue, Jun 07, 2022 at 11:22:34AM -0400, Dan Ritter wrote: search Search list for host-name lookup. By default, the search [...] This may be changed by listing the desired domain search path following the search keyword with spaces

Re: Needless DNS queries

2022-06-07 Thread Greg Wooledge
On Tue, Jun 07, 2022 at 11:22:34AM -0400, Dan Ritter wrote: > > searchSearch list for host-name lookup. By default, the > search > [...] > This may be changed by listing the desired domain search > path following the search keyword with spaces or tabs separating the > name

Re: Needless DNS queries

2022-06-07 Thread Tim Woodall
On Tue, 7 Jun 2022, Dan Ritter wrote: Dieter Rohlfing wrote: Hello everybody, When a client queries for a domain and the answer is NXDOMAIN, there is immediately a second query with the original domain name, but suffixed with the domain name of my home network. Example: 1. query: www.example

Re: Needless DNS queries

2022-06-07 Thread Dan Ritter
Dieter Rohlfing wrote: > Hello everybody, > > When a client queries for a domain and the answer is NXDOMAIN, there is > immediately a second query with the original domain name, but suffixed > with the domain name of my home network. > > Example: > > 1. query: www.example.com (result NXDOMAIN)

Re: Needless DNS queries

2022-06-07 Thread David Wright
On Tue 07 Jun 2022 at 17:01:21 (+0200), Dieter Rohlfing wrote: > When a client queries for a domain and the answer is NXDOMAIN, there is > immediately a second query with the original domain name, but suffixed > with the domain name of my home network. > > Example: > > 1. query: www.example.com (

Needless DNS queries

2022-06-07 Thread Dieter Rohlfing
Hello everybody, I've installed AdguardHome to serve the clients in my home network. After checking AdguardHome's query logs I noticed a lot of needless DNS queries. When a client queries for a domain and the answer is NXDOMAIN, there is immediately a second query with the original d