variable use_auto_addr will be examined. If it is set
the value of auto_bind_ip will be used as the IP address
to listen for the return reply, the value of auto_public_ip
will be the IP address sent to the remote client, and the
auto_bind_port will be the port value to be bound to and
sent to the remote client. If auto_public_ip is unset, but
variable use_auto_addr will be examined. If it is set
the value of auto_bind_ip will be used as the IP address
to listen for the return reply, the value of auto_public_ip
will be the IP address sent to the remote client, and the
auto_bind_port will be the port value to be bound to and
sent to the remote client. If auto_public_ip is unset, but