[CentOS] CentOS 8 DNS resolution not working as expected

Thu Aug 6 12:35:52 UTC 2020
isdtor <isdtor at gmail.com>

Pete Biggs writes:
> 
> > > man host
> > > 
> > >        -N ndots
> > >            The number of dots that have to be in name for it to be considered absolute. The default value is that defined using
> > >            the ndots statement in /etc/resolv.conf, or 1 if no ndots statement is present. Names with fewer dots are interpreted
> > >            as relative names and will be searched for in the domains listed in the search or domain directive in
> > >            /etc/resolv.conf.
> > 
> > As per man resolv.conf, the default setting hasn't changed. It is n=1 on all of CentOS 6/7/8.
> > 
> 
> Does
> 
>    host -N2 foo.subdomain
> 
> work on CentOS 8?  Does it work if you put ndots: 2 in resolv.conf?
> 
> There may have been a change in behaviour - from the tests I've done it
> seems more like it's fixing a bug/inconsistency somewhere because doing
>  
>    host -N1 foo.subdomain 
> 
> should not work, but it does on CentOS 7.

Interesting. Yes, host -N2 works, as does ndots:2.