Option Name:visible_hostname
Replaces:
Requires:
Default Value:Automatically detect the system host name
Suggested Config:

	If you want to present a special hostname in error messages, etc,
	define this.  Otherwise, the return value of gethostname()
	will be used. If you have multiple caches in a cluster and
	get errors about IP-forwarding you must set them to have individual
	names with this setting.