.TH natpmpc 1 .SH NAME natpmpc \- NAT\-PMP library test client and mapping setter. .SH "SYNOPSIS" Display the public IP address: .br \fBnatpmpc\fP Add a port mapping: .br \fBnatpmpc\fP \-a [lifetime] .SH DESCRIPTION In order to remove a mapping, set it with a lifetime of 0 seconds. To remove all mappings for your machine, use 0 as private port and lifetime.