A new CTDB node grabs all public IP address in the cluster

[曹宇]

I found something weird.

Start up a CTDB service on nodeA, which have the public ip
of 192.169.100.20/16 and 192.169.100.21/16,

Then start up a new CTDB nodeB,
the result is that the new nodeB got two public ips(100.20 and 100.21),
while nodeA got nothing.

Why not nodeA and nodeB got one pulic IP each in this case?