text: You can assign one IPv4 address and one IPv6 address to each Ethernet port on the system 
  platforms. Each of these IP addresses can be shared between iSCSI host attach and the IP 
  partnership. The user must configure the required IP address (IPv4 or IPv6) on an Ethernet 
  port with a remote copy port group. 
  
  The administrator might want to use IPv6 addresses for remote copy operations and use IPv4 
  addresses on that same port for iSCSI host attach. This configuration also implies that for two 
  systems to establish an IP partnership, both systems must have IPv6 addresses that are 
  configured. 
  
  Administrators can choose to dedicate an Ethernet port for IP partnership only. In that case, 
  host access must be explicitly disabled for that IP address and any other IP address that is 
  configured on that Ethernet port. 
  
  **Note:**To establish an IP partnership, each IBM SAN Volume Controller node must have 
  only a single remote copy port group that is configured, 1 or 2. The remaining IP addresses 
  must be in remote copy port group 0. 