After you upgrade from the Solaris 2.6 Hardware 3/98 or the Solaris 2.6 5/98 operating environment and if your systems have sun4u diskless clients or Solstice AutoClients, then the SUNWcvc.u and SUNWdrr.u packages are not installed on diskless or Solstice AutoClients.
Workaround: After you have completed an upgrade, add the SUNWcvc.u and SUNWdrr.u packages to a sun4u diskless client or Solstice AutoClient as follows with a client called foo:
Mount the Solaris 7 5/99 CD for the SPARC platform.
Change to the following directory:
# cd /cdrom/cdrom0/s0/Solaris_2.7/Product
Add the following packages using the pkgadd command:
# pkgadd -R /export/root/foo -d `pwd` SUNWcvc.u