perl-ldap-0.52 breaks Amavis

[Quanah Gibson-Mount]

The changes in inet6 handling somewhere between Net::LDAP 0.44 and 
Net::LDAP 0.52 breaks Amavis' ability to talk to LDAP.

I can trivially reproduce the issue with a test script:

#!/usr/bin/perl
use strict;
use lib '/opt/zimbra/zimbramon/lib';
use Net::LDAP;

my $hostlist="ldap://zqa-398.eng.vmware.com:389";
my $ldap = Net::LDAP->new($hostlist,
  inet6   => 1,
  );
if (!$ldap) {  # connect failed
  print "connect_to_ldap: unable to connect to host $hostlist\n";
}

zimbra at zqa-398:~/zimbramon/lib/Net$ /tmp/test-ldap.pl
connect_to_ldap: unable to connect to host ldap://zqa-398.eng.vmware.com:389

This worked fine in perl 0.44.  I would note the system is only listening 
to IPv4.  It appears that with perl-ldap 0.52, if it cannot talk to the 
server on IPv6, it will *not* fall back to IPv4, whereas with perl 0.44, it 
would.

--Quanah

--

Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
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