This is a bit mask setting selected parts of the configuration
to factory defaults.
value & 1: causes all front ports to revert to normal mode. All
servers referring to a leaving-server-mode frontport are
deleted too and all static sites reffering to deleted servers
are deleted too.
value & 2: removes all servers and all static sites
value & 4: removes all TCP-protocols
value & 8: removes all static sites
value & 16: sets polling interval to 30 seconds and switches off
the entire transparent caching facility
As an example setting this attribute to the value 31 completely
restores factory defaults.