The 'pcieb' driver shares the alias 
'pciexclass,060400' with the 'pcie_pci' driver, 
but the system cannot determine how the latter was delivered. 
Its entry on line 2 in /etc/driver_aliases has been commented out. 
If this driver is no longer needed, it may be removed by booting into the 
'solaris-2' boot environment and invoking 'rem_drv pcie_pci' 
as well as removing line 2 from /etc/driver_aliases or, 
before rebooting, mounting the 'Solaris-2' boot environment 
and running 'rem_drv -b <mountpoint>pcie_pci' and removing line 2 
from <mountpoint>/etc/driver_aliases.