Your BIND statement: 
my $mesg = $ldap->bind( 'sasl' => $sasl, version => 3 ) or die "$@";

[download]
Does not seem to follow the LDAP bind syntax, which requires the first argument to be a DN to bind/authenticate to.

I believe you are getting an authorization error (5), since you try to do a search using what looks like an anonymous bind. </c>

        ...it is unhealthy to remain near things that are in the process of blowing up.     man page for WARP, by Larry Wall

In reply to Re: Net::LDAP giving I/O Error by NetWallah
in thread Net::LDAP giving I/O Error by dvl

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