"""Set ARP cache entree on DUT node.
:param node: VPP Node in the topology.
:param iface_key: Interface key.
:param ip_address: IP address of the interface.
:param mac_address: MAC address of the interface.
"""Set ARP cache entree on DUT node.
:param node: VPP Node in the topology.
:param iface_key: Interface key.
:param ip_address: IP address of the interface.
:param mac_address: MAC address of the interface.