This property returns a string which specifies the external IP
address for the local system. If the system has been assigned multiple
IP addresses, it reflects the address of the interface that was used
to establish a connection with the SocketTools server. If the
connection is made through a Virtual Private Network (VPN) it will use
that assigned IP address. If a connection is made through a proxy
server, the IP address may be address of the proxy rather than the
local host, depending on how the connection is made.
This property cannot be assigned a value to query the location of
different IP addresses. If the external IP address of the local system
cannot be determined, this property will return an empty string.