DD-WRT v3 Router Setup – IPVanish
support.ipvanish.com › hc › en-usIf you are running a router-behind-router configuration you will want to make sure your DD-WRT router is on a different subnet than any other router/modem on your network. This can be done by going to Setup/Basic Setup tab and changing your Local IP address to '192.168.8.1' without quotes
DD-WRT v2 Router Setup – IPVanish
support.ipvanish.com › hc › en-usTo do this, you will need to go to DD-WRT's router database and search for your router's model number to see if your router is compatible or find a beta build of the firmware for your router. Warning: Flashing (Installing) an incompatible version of DD-WRT incorrectly on your router can potentially brick your router, making it useless.