It was found that cookies are being set with the name of "OPENSHIFT_<namespace>_SERVERID", containing the internal IP address of the pod. Product bug: https://bugzilla.redhat.com/show_bug.cgi?id=1318796
This issue has been addressed in the following products: Red Hat OpenShift Enterprise 3.2 Via RHSA-2016:1064 https://access.redhat.com/errata/RHSA-2016:1064