check wan ip address -- I just copy from sonicwall admin guide

To test the HTTP policy-based route, from a computer attached to the LAN interface, access


the public Web site http://www.whatismyip.com and http://whatismyip.everdot.org. Both sites

display the primary WAN interface’s IP address and not the secondary WAN interface.

To test the Telnet policy-based route, telnet to route-server.exodus.net and when logged in,

issue the who command. It displays the IP address (or resolved FQDN) of the WAN IP address

of the secondary WAN interface and not the primary WAN interface.