Setting Up and Configuring the Router
Setup
Cisco RVS4000 Security Router with VPN Administrator Guide 45
5
Setup > IP Mode
Setup > IP Mode
IPv4 Only Select this option to use IPv4 on the Internet and local network.
Dual-Stack IP Select this option to use IPv4 on the Internet and IPv4 and IPv6 on
the local network. IPv6 hosts in the LAN are connected to remote IPv6 islands over
6to4 tunnels (per RFC3056).
Click Save to save your settings or click Cancel to undo your changes.