This was merged as https://github.com/openshift/ose/pull/1297
Checked on v3.7.68 The node can be started successfully after changing the IP. And the master can get the updated info of the node.
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. https://access.redhat.com/errata/RHSA-2018:2906