Using a specific NIC

["Full Name" <nuncestbibendum [at] excite.com>]

I have a CentOS 7 system where I am running the nss-pam-ldapd module in order 
to obtain users' attributes from a remote LDAP server. This works as expected, 
but I have the following issue:

I want to do the same thing on a different CentOS 7 system which comes with 
several functional NICs. In this system, the LDAP server is reachable from just 
one of those NICs. How can I force the nss-pam-ldapd module to use that 
specific NIC? The nslcd.conf file does not seem to afford the capability to do 
so. Can this be done without hacking the nss-pam-ldapd source code?