[INS-41112] Specified network interface doesnt maintain connectivity across cluster nodes.

Cause - Installer has detected that network interface eth0 does not maintain connectivity on all cluster nodes.  Action - Ensure that the chosen interface has been configured across all cluster nodes.  Additional Information:
Summary of the failed nodes srv2  - PRVG-11850 : The system call "connect" failed with error "113" while executing exectask on node "srv2"
No route to host  - Cause:  An attempt to execute exectask on the specified node failed.  - Action:  Examine the accompanying error message for details or contact Oracle Support Services. srv1  - PRVG-11850 : The system call "connect" failed with error "113" while executing exectask on node "srv1"
No route to host  - Cause:  An attempt to execute exectask on the specified node failed.  - Action:  Examine the accompanying error message for details or contact Oracle Support Services.
#####################################################

Solution : This was the real time scenario  found during installation, No MAC address values defined by linux team on /etc/sysconfig/network/ ifcfg-em1 file  value HWADDR=xx:xx:xxx:xx:xx:xx

• Check MAC address by typing command on terminal : /sbin/ifconfig
• Add  HWADDR=xx:xx:xxx:xx:xx:xx  value  on /etc/sysconfig/network/ifcfg-em1 file  (on both nodes both NIC card)

oracle@sgdcplm01:/etc/sysconfig/network> cat ifcfg-p8p2

BOOTPROTO='static'
BROADCAST=''
ETHTOOL_OPTIONS=''
IPADDR='xx.xx.xx.xxx/xx'
MTU=''
NAME='Ethernet Controller X710 for 10GbE backplane'
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'
oracle@sgdcplm02:/etc/sysconfig/network> cat ifcfg-em2
BOOTPROTO='static'
BROADCAST=''
ETHTOOL_OPTIONS=''
IPADDR='xx.xxx.x.xxx/xx'
MTU=''
NAME='Ethernet Controller 10G X550T'
NETWORK=''
REMOTE_IPADDR=''

HWADDR=xx:xx:xxx:xx:xx:xx
STARTMODE='auto'