PTP will be a Tech Preview in RHEL6.4, so we can make PTP a Tech Preview in MRG-RT, also. At a minimum, we'll need to 1) enable the timestamp logic in the kernel config 2) use the linuxptp package delivered in RHEL6.4
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2013-0566.html