Failover priority for multiple passive IPMP interfaces

I've been using active-passive IPMP with 2 interfaces for some time and am comfortable with how it works.  But I'm curious to know what happens with more than 2 interfaces in the same group.

Take the following example (Solaris 10, and yes I know it's extreme ) :

# dladm show-dev

igb0            link: up        speed: 1000  Mbps       duplex: full

igb1            link: up        speed: 1000  Mbps       duplex: full

ixgbe1          link: up        speed: 10000 Mbps       duplex: full

ixgbe3          link: up        speed: 10000 Mbps       duplex: full

# cat hostname.ixgbe1

myhost netmask + broadcast + group ipmp-0 up

# cat hostname.ixgbe3

group ipmp-0 up

# cat hostname.igb0

group ipmp-0 up

# cat hostname.igb1

group ipmp-0 up