A [Neighbor] section accepts the following keys. The neighbor
section adds a permanent, static entry to the neighbor table
(IPv6) or ARP table (IPv4) for the given hardware address on the
links matched for the network. Specify several [Neighbor]
sections to configure several static neighbors.
Address=
The IP address of the neighbor.
LinkLayerAddress=
The link layer address (MAC address or IP address) of the
neighbor.