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Description of problem:
/etc/resolv.conf do not resolve sercond or third multiple domain in the search list.

Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux Server release 6.2
Red Hat Enterprise Linux Server release 6.3 (Mybe Not available)
Red Hat Enterprise Linux Server release 6.4

How reproducible:
/etc/resolv.conf
search pippo.it pluto.net
nameserver 151.89.1.65



Steps to Reproduce:
1.
[root@localhost ~]# nslookup server1
Server:         151.89.1.65
Address:        151.89.1.65#53

Name:   server1.pippo.it
Address: 151.89.2.14

2.
[root@localhost ~]# nslookup server2
Server:         151.89.1.65
Address:        151.89.1.65#53

*** Can't find server2: No answer

3.
[root@localhost ~]# nslookup server2.pluto.net
Server:         151.89.1.65
Address:        151.89.1.65#53

Non-authoritative answer:
Name:   server2.pluto.net
Address: 172.19.5.97

Actual results:
[root@localhost ~]# nslookup server2
Server:         151.89.1.65
Address:        151.89.1.65#53

*** Can't find server2: No answer

Expected results:

[root@localhost ~]# nslookup server2
Server:         151.89.1.65
Address:        151.89.1.65#53

Name:   server2.pluto.net
Address: 172.19.5.97


Additional info:

This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.

This must be something that is specific to the response the resolver 151.89.1.65 for server2.pippo.it.  The description does not contain sufficient data to diagnose this, and the resolver 151.89.1.65 is no longer publicly reachable.