Solaris 10 u6 Has No '-u' on "zfs receive"
Despite what you might read at docs.sun.com, Solaris 10 update 6 doesn’t have a “-u” option for zfs receive.
Technical
Moving a Solaris 10 Zone
Today I wanted to move a Solaris 9 zone running on a Solaris 10 test server to a new ZFS dataset within the same ZFS pool with compression enabled.