This INTEGER, src or dst, is described as determining whether the static entry translates the source address of outgoing packets or the destination address of incoming packets. An admin chooses 'dst' to publish an internal server's address to reachable-from-outside clients, and 'src' to make an internal host's outbound traffic appear to originate from a fixed public address. For example, an admin exposing a web server for inbound connections would set this to 'dst', while an admin giving a specific workstation a consistent outbound public identity would set it to 'src'.