Re: [CentOS] CentOS 8 DNS resolution not working as expected

Pete Biggs writes:

...

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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.