https://bugs.openldap.org/show_bug.cgi?id=10158
--- Comment #4 from umagmrit@gmail.com --- seen a similar type of issue. https://bugs.openldap.org/show_bug.cgi?id=9739, but this is with 2.6.0 and mentioned that the "ber_sockbuf_io_udp" symbol only exists if OpenLDAP is built with LDAP_CONNECTIONLESS defined, which is not a supported feature. If I added CFLAGS="${CFLAGS} -DLDAP_CONNECTIONLESS" on RHEL-7, the issue is not occurring, but I am not sure whether this is a recommended approach or not. Please share your thoughts here.