[Bug nis/2429] New: host lookup not continued after nisplus

["egmont at uhulinux dot hu" <sourceware-bugzilla at sourceware dot org>]

I always had a
  hosts: files nisplus nis dns
line in nsswitch.conf, though I never had any YP/NIS/NIS+ server around here
and the domainname is not set either. So far (through many versions of glibc,
including 2.3.6) it worked perfectly, glibc looked for the entries first in
/etc/hosts, then at the dns server.

After upgrading to 2.4, several applications (e.g. ftp, ping) still resolv
hostnames, though some others (rsync-2.6.6, wget-1.10.2) misbehave, they do
not query entries from the dns server. (I've recompiled these applications
against glibc-2.4 but nothing changed.)

If I remove the "nisplus" word from nsswitch, then they work again as expected.
However, the strace output shows that the nss_nis and nss_dns modules are not
even loaded after nss_nisplus. To make it more explicit, I changed this line to
  hosts: files nisplus [SUCCESS=continue NOTFOUND=continue UNAVAIL=continue 
TRYAGAIN=continue] nis dns
but still nisplus is the last module looked up for these applications (while
strangely for other ones the lookup continues with nis and dns). If I
understand the docs correctly, the lookup should continue, no matter what the
nisplus module answers.

I attach the logfile created with this command:
  strace -o /tmp/rsync-strace.txt -s 80 rsync rsync://rsync.uhulinux.hu/
that shows that glibc doesn't try to load nss_nis and nss_dns. (The hosts
file now contains the long "hosts:" line with the four "continue" statements.)

PS.: nscd is not running, but nothing changes if I start it with host caching
enabled.

-- 
           Summary: host lookup not continued after nisplus
           Product: glibc
           Version: 2.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nis
        AssignedTo: kukuk at suse dot de
        ReportedBy: egmont at uhulinux dot hu
                CC: glibc-bugs at sources dot redhat dot com
 GCC build triplet: i586-uhu-linux
  GCC host triplet: i586-uhu-linux
GCC target triplet: i586-uhu-linux


http://sourceware.org/bugzilla/show_bug.cgi?id=2429

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.