Root.sh fails with crsconfig_lib.pm line 1016

Rac installtion,Root.sh fails with crsconfig_lib.pm line 1016
Error:
=========
Node-2: root.sh fails as below.

CRS-4402: The CSS daemon was started in exclusive mode but found an active CSS daemon on node za-rac-uat-01, number 1, and is terminating
An active cluster was found during exclusive startup, restarting to join the cluster
Failed to start Oracle Clusterware stack
Failed to start Cluster Synchorinisation Service in clustered mode at /u01/app/11.2.0/grid/crs/install/crsconfig_lib.pm line 1016.
/u01/app/11.2.0/grid/perl/bin/perl -I/u01/app/11.2.0/grid/perl/lib -I/u01/app/11.2.0/grid/crs/install /u01/app/11.2.0/grid/crs/install/rootcrs.pl execution failed

Solution:
========
As per note: Oracle Grid Infrastructure 11.2.0.2 Installation or Upgrade may fail due to Multicasting Requirement [ID 1212703.1]
Apply patch 9974223
Download the patch and apply as below.
As root user:
#/u01/app/11.2.0/grid/crs/install/rootcrs.pl -unlock
#cd <GRID_HOME>/Opatch/
#./opatch napply -local -oh /u01/app/11.2.0/grid -id 9974223
 
#opatch lsinventory -detail -oh /u01/app/11.2.0/grid
#./opatch lsinventory -oh /u01/app/11.2.0/grid

As a root run below.
#<GRID_HOME>/crs/install/rootcrs.pl -patch

Repeat this on Node-2.Then check the CRS status.
crsctl stat res -t