Should the Virtual IP shutdown when all real servers are dead?

["Johnson L. Wu" <jwu@xxxxxxxxxx>]

 Greetings,
 
 I have a config where:
 
 2 LVS directors are setup as an HA pair.
 
 LVS-A(MASTER) has real servers R1 and R2
 LVS-B(BACKUP) has real servers R1, R2, and R3
 
 When both R1 and R2 go down, I see LVS-A generate an email notifying
 the realservers being DOWN.  However, LVS-B does not assume MASTER
 until someone unplugs the ethernet of LVS-A or simply powers down LVS-A.
 
 I wonder if there is a supported config for the master to tell the backup
 to assume active once all it's realservers fail.
 
 Thanks.
 
 -Johnson Wu