Road Warrior
A "Road Warrior" is defined as a remote machine whose IP address is unknown at this time. It may be a sales employee dialing into local ISPs while on the road or it may be an engineer at home on his cable modem.

When this machine is checked then the secret/profile (whichever is appropriate) will be valid for any IP address. Obviously this has some impact on the security of the VPN, so you should try to use static IP addresses whenever possible.