The value of vRtrIfProxyArpPolicy5 is used to specify the fifth
proxy ARP policy for this interface. This policy determines
networks and sources for which proxy ARP will be attempted. If
this value is set to an empty string, ''H, the interface does
not have a proxy ARP policy associated with it.
The value of vRtrIfProxyArpPolicy5 has no effect if vRtrIfProxyArp
is set to 'false'.