LDom problem: How can I prevent duplicate MAC

On live migration I got the following error:
root@orat4-2:/home/admin# ldm migrate dom1 delphi
Target Password:
Constraint XML: Failed to create domain
MAC address 00:14:4f:f9:3d:99 is already in use.
public alt-mac-addrs collision.
Domain Migration of LDom dom1 failed

It is true, the MAC is on one server in the auto pool on one the other the MAC for the primary Dom

on the destination T4:
root@delphi:/home/admin# ldm list -o network
NAME            
primary         

MAC
    00:10:e0:23:66:4e

VSW
    NAME             MAC               NET-DEV   ID   DEVICE     LINKPROP   DEFAULT-VLAN-ID PVID VID                  MTU   MODE   INTER-VNET-LINK
    primary-vsw1     00:14:4f:f9:3d:99 aggr0     1    switch@1              1               1    5,20,17              1500         on