[Bug network/34515] New: resolver applies search path for AAAA queries even though ndots is exceeded

https://sourceware.org/bugzilla/show_bug.cgi?id=34515

            Bug ID: 34515
           Summary: resolver applies search path for AAAA queries even
                    though ndots is exceeded
           Product: glibc
           Version: 2.43
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: network
          Assignee: unassigned at sourceware dot org
          Reporter: [email protected]
  Target Milestone: ---

With the following resolv.conf:

 search suse.de
 # implicit default: options ndots:1

Running "getent hosts code.qt.io" returns the IPv6 address for
"code.qt.io.suse.de":

 > getent hosts code.qt.io
 2a07:de40:b205:1c:10:144:53:65 gitlab.prg2.suse.org code.qt.io.suse.de
gitlab.suse.de

even though code.qt.io. exists:

 > getent hosts code.qt.io.
 54.247.17.180   code.qt.io

That is because the ndots option only attempts to do an AAAA lookup, which
fails:

 > host -t AAAA code.qt.io
 code.qt.io has no AAAA record
 > host -t A code.qt.io
 code.qt.io has address 54.247.17.180

That triggers the fallback to iterate the search list.

For consistency, the initial query for ndots should probably always attempt A
if AAAA is requested?

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