These parameters control the address and optionally the port number used for the client source port, although this is usually not necessary. LocalPort is a string, it can be a port number or name. It binds the local port if LocalAddress is defined. If LocalPort is not specified or if it is set to 0, a port number is allocated in the usual way.

When SCTP multihoming is supported, multiple comma separated addresses can be configured. All addresses defined with LocalAddress must be either IPv4 or IPv6 addresses.

LocalAddress 203.63.154.29
LocalPort 12345