This string defines the type of RADIUS request that is sent as
a keep-alive request. Any RADIUS request type is allowed. The default
value is Status-Server.
Here is an example of using
KeepaliveRequestType with
AddToKeepaliveRequest:
# Send Access-Request as keepalive probe
KeepaliveRequestType Access-Request
AddToKeepaliveRequest User-Name=mikem,User-Password=fred