Recommended Configuration for no used Eth Interfaces

Good Day Experts

Platform: HP Proliant DL380, HPE Ethernet 1Gb 4-port 331i Adapter
OS : RHEL 7.3

I have port 3 not used and I see it have below configuration :

[root@NSD-NRC network-scripts]# cat ifcfg-eno3
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eno3
UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
DEVICE=eno3
ONBOOT=no

I would like to have your advice for a recommended configuration that I should put in place for unused ports in general.

Thank you in advance.